640552320

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1951}}^1$

素因数の和:1998

約数の個数: 256

約数和(自身を含む): 2389248000

約数和(自身を除く): 1748695680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 64, 72, 76, 80, 90, 95, 96, 108, 114, 120, 128, 135, 144, 152, 160, 171, 180, 190, 192, 216, 228, 240, 270, 285, 288, 304, 320, 342, 360, 380, 384, 432, 456, 480, 513, 540, 570, 576, 608, 640, 684, 720, 760, 855, 864, 912, 960, 1026, 1080, 1140, 1152, 1216, 1368, 1440, 1520, 1710, 1728, 1824, 1920, 1951, 2052, 2160, 2280, 2432, 2565, 2736, 2880, 3040, 3420, 3456, 3648, 3902, 4104, 4320, 4560, 5130, 5472, 5760, 5853, 6080, 6840, 7296, 7804, 8208, 8640, 9120, 9755, 10260, 10944, 11706, 12160, 13680, 15608, 16416, 17280, 17559, 18240, 19510, 20520, 21888, 23412, 27360, 29265, 31216, 32832, 35118, 36480, 37069, 39020, 41040, 46824, 52677, 54720, 58530, 62432, 65664, 70236, 74138, 78040, 82080, 87795, 93648, 105354, 109440, 111207, 117060, 124864, 140472, 148276, 156080, 164160, 175590, 185345, 187296, 210708, 222414, 234120, 249728, 263385, 280944, 296552, 312160, 328320, 333621, 351180, 370690, 374592, 421416, 444828, 468240, 526770, 556035, 561888, 593104, 624320, 667242, 702360, 741380, 749184, 842832, 889656, 936480, 1000863, 1053540, 1112070, 1123776, 1186208, 1248640, 1334484, 1404720, 1482760, 1668105, 1685664, 1779312, 1872960, 2001726, 2107080, 2224140, 2247552, 2372416, 2668968, 2809440, 2965520, 3336210, 3371328, 3558624, 3745920, 4003452, 4214160, 4448280, 4744832, 5004315, 5337936, 5618880, 5931040, 6672420, 6742656, 7117248, 8006904, 8428320, 8896560, 10008630, 10675872, 11237760, 11862080, 13344840, 14234496, 16013808, 16856640, 17793120, 20017260, 21351744, 23724160, 26689680, 32027616, 33713280, 35586240, 40034520, 42703488, 53379360, 64055232, 71172480, 80069040, 106758720, 128110464, 160138080, 213517440, 320276160, 640552320]

約数ペア:

[(1, 640552320), (2, 320276160), (3, 213517440), (4, 160138080), (5, 128110464), (6, 106758720), (8, 80069040), (9, 71172480), (10, 64055232), (12, 53379360), (15, 42703488), (16, 40034520), (18, 35586240), (19, 33713280), (20, 32027616), (24, 26689680), (27, 23724160), (30, 21351744), (32, 20017260), (36, 17793120), (38, 16856640), (40, 16013808), (45, 14234496), (48, 13344840), (54, 11862080), (57, 11237760), (60, 10675872), (64, 10008630), (72, 8896560), (76, 8428320), (80, 8006904), (90, 7117248), (95, 6742656), (96, 6672420), (108, 5931040), (114, 5618880), (120, 5337936), (128, 5004315), (135, 4744832), (144, 4448280), (152, 4214160), (160, 4003452), (171, 3745920), (180, 3558624), (190, 3371328), (192, 3336210), (216, 2965520), (228, 2809440), (240, 2668968), (270, 2372416), (285, 2247552), (288, 2224140), (304, 2107080), (320, 2001726), (342, 1872960), (360, 1779312), (380, 1685664), (384, 1668105), (432, 1482760), (456, 1404720), (480, 1334484), (513, 1248640), (540, 1186208), (570, 1123776), (576, 1112070), (608, 1053540), (640, 1000863), (684, 936480), (720, 889656), (760, 842832), (855, 749184), (864, 741380), (912, 702360), (960, 667242), (1026, 624320), (1080, 593104), (1140, 561888), (1152, 556035), (1216, 526770), (1368, 468240), (1440, 444828), (1520, 421416), (1710, 374592), (1728, 370690), (1824, 351180), (1920, 333621), (1951, 328320), (2052, 312160), (2160, 296552), (2280, 280944), (2432, 263385), (2565, 249728), (2736, 234120), (2880, 222414), (3040, 210708), (3420, 187296), (3456, 185345), (3648, 175590), (3902, 164160), (4104, 156080), (4320, 148276), (4560, 140472), (5130, 124864), (5472, 117060), (5760, 111207), (5853, 109440), (6080, 105354), (6840, 93648), (7296, 87795), (7804, 82080), (8208, 78040), (8640, 74138), (9120, 70236), (9755, 65664), (10260, 62432), (10944, 58530), (11706, 54720), (12160, 52677), (13680, 46824), (15608, 41040), (16416, 39020), (17280, 37069), (17559, 36480), (18240, 35118), (19510, 32832), (20520, 31216), (21888, 29265), (23412, 27360)]