656640

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{19}}^1$

素因数の和:49

約数の個数: 144

約数和(自身を含む): 2452800

約数和(自身を除く): 1796160

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, 256, 270, 285, 288, 304, 320, 342, 360, 380, 384, 432, 456, 480, 513, 540, 570, 576, 608, 640, 684, 720, 760, 768, 855, 864, 912, 960, 1026, 1080, 1140, 1152, 1216, 1280, 1368, 1440, 1520, 1710, 1728, 1824, 1920, 2052, 2160, 2280, 2304, 2432, 2565, 2736, 2880, 3040, 3420, 3456, 3648, 3840, 4104, 4320, 4560, 4864, 5130, 5472, 5760, 6080, 6840, 6912, 7296, 8208, 8640, 9120, 10260, 10944, 11520, 12160, 13680, 14592, 16416, 17280, 18240, 20520, 21888, 24320, 27360, 32832, 34560, 36480, 41040, 43776, 54720, 65664, 72960, 82080, 109440, 131328, 164160, 218880, 328320, 656640]

約数ペア:

[(1, 656640), (2, 328320), (3, 218880), (4, 164160), (5, 131328), (6, 109440), (8, 82080), (9, 72960), (10, 65664), (12, 54720), (15, 43776), (16, 41040), (18, 36480), (19, 34560), (20, 32832), (24, 27360), (27, 24320), (30, 21888), (32, 20520), (36, 18240), (38, 17280), (40, 16416), (45, 14592), (48, 13680), (54, 12160), (57, 11520), (60, 10944), (64, 10260), (72, 9120), (76, 8640), (80, 8208), (90, 7296), (95, 6912), (96, 6840), (108, 6080), (114, 5760), (120, 5472), (128, 5130), (135, 4864), (144, 4560), (152, 4320), (160, 4104), (171, 3840), (180, 3648), (190, 3456), (192, 3420), (216, 3040), (228, 2880), (240, 2736), (256, 2565), (270, 2432), (285, 2304), (288, 2280), (304, 2160), (320, 2052), (342, 1920), (360, 1824), (380, 1728), (384, 1710), (432, 1520), (456, 1440), (480, 1368), (513, 1280), (540, 1216), (570, 1152), (576, 1140), (608, 1080), (640, 1026), (684, 960), (720, 912), (760, 864), (768, 855)]