128978640

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:346

約数の個数: 240

約数和(自身を含む): 501241728

約数和(自身を除く): 372263088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 157, 163, 168, 180, 210, 240, 252, 280, 314, 315, 326, 336, 360, 420, 471, 489, 504, 560, 628, 630, 652, 720, 785, 815, 840, 942, 978, 1008, 1099, 1141, 1256, 1260, 1304, 1413, 1467, 1570, 1630, 1680, 1884, 1956, 2198, 2282, 2355, 2445, 2512, 2520, 2608, 2826, 2934, 3140, 3260, 3297, 3423, 3768, 3912, 4396, 4564, 4710, 4890, 5040, 5495, 5652, 5705, 5868, 6280, 6520, 6594, 6846, 7065, 7335, 7536, 7824, 8792, 9128, 9420, 9780, 9891, 10269, 10990, 11304, 11410, 11736, 12560, 13040, 13188, 13692, 14130, 14670, 16485, 17115, 17584, 18256, 18840, 19560, 19782, 20538, 21980, 22608, 22820, 23472, 25591, 26376, 27384, 28260, 29340, 32970, 34230, 37680, 39120, 39564, 41076, 43960, 45640, 49455, 51182, 51345, 52752, 54768, 56520, 58680, 65940, 68460, 76773, 79128, 82152, 87920, 91280, 98910, 102364, 102690, 113040, 117360, 127955, 131880, 136920, 153546, 158256, 164304, 179137, 197820, 204728, 205380, 230319, 255910, 263760, 273840, 307092, 358274, 383865, 395640, 409456, 410760, 460638, 511820, 537411, 614184, 716548, 767730, 791280, 821520, 895685, 921276, 1023640, 1074822, 1151595, 1228368, 1433096, 1535460, 1612233, 1791370, 1842552, 2047280, 2149644, 2303190, 2687055, 2866192, 3070920, 3224466, 3582740, 3685104, 4299288, 4606380, 5374110, 6141840, 6448932, 7165480, 8061165, 8598576, 9212760, 10748220, 12897864, 14330960, 16122330, 18425520, 21496440, 25795728, 32244660, 42992880, 64489320, 128978640]

約数ペア:

[(1, 128978640), (2, 64489320), (3, 42992880), (4, 32244660), (5, 25795728), (6, 21496440), (7, 18425520), (8, 16122330), (9, 14330960), (10, 12897864), (12, 10748220), (14, 9212760), (15, 8598576), (16, 8061165), (18, 7165480), (20, 6448932), (21, 6141840), (24, 5374110), (28, 4606380), (30, 4299288), (35, 3685104), (36, 3582740), (40, 3224466), (42, 3070920), (45, 2866192), (48, 2687055), (56, 2303190), (60, 2149644), (63, 2047280), (70, 1842552), (72, 1791370), (80, 1612233), (84, 1535460), (90, 1433096), (105, 1228368), (112, 1151595), (120, 1074822), (126, 1023640), (140, 921276), (144, 895685), (157, 821520), (163, 791280), (168, 767730), (180, 716548), (210, 614184), (240, 537411), (252, 511820), (280, 460638), (314, 410760), (315, 409456), (326, 395640), (336, 383865), (360, 358274), (420, 307092), (471, 273840), (489, 263760), (504, 255910), (560, 230319), (628, 205380), (630, 204728), (652, 197820), (720, 179137), (785, 164304), (815, 158256), (840, 153546), (942, 136920), (978, 131880), (1008, 127955), (1099, 117360), (1141, 113040), (1256, 102690), (1260, 102364), (1304, 98910), (1413, 91280), (1467, 87920), (1570, 82152), (1630, 79128), (1680, 76773), (1884, 68460), (1956, 65940), (2198, 58680), (2282, 56520), (2355, 54768), (2445, 52752), (2512, 51345), (2520, 51182), (2608, 49455), (2826, 45640), (2934, 43960), (3140, 41076), (3260, 39564), (3297, 39120), (3423, 37680), (3768, 34230), (3912, 32970), (4396, 29340), (4564, 28260), (4710, 27384), (4890, 26376), (5040, 25591), (5495, 23472), (5652, 22820), (5705, 22608), (5868, 21980), (6280, 20538), (6520, 19782), (6594, 19560), (6846, 18840), (7065, 18256), (7335, 17584), (7536, 17115), (7824, 16485), (8792, 14670), (9128, 14130), (9420, 13692), (9780, 13188), (9891, 13040), (10269, 12560), (10990, 11736), (11304, 11410)]