64480640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:452

約数の個数: 128

約数和(自身を含む): 181396800

約数和(自身を除く): 116916160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 64, 70, 74, 80, 112, 128, 140, 148, 160, 185, 224, 259, 280, 296, 320, 370, 389, 448, 518, 560, 592, 640, 740, 778, 896, 1036, 1120, 1184, 1295, 1480, 1556, 1945, 2072, 2240, 2368, 2590, 2723, 2960, 3112, 3890, 4144, 4480, 4736, 5180, 5446, 5920, 6224, 7780, 8288, 10360, 10892, 11840, 12448, 13615, 14393, 15560, 16576, 20720, 21784, 23680, 24896, 27230, 28786, 31120, 33152, 41440, 43568, 49792, 54460, 57572, 62240, 71965, 82880, 87136, 100751, 108920, 115144, 124480, 143930, 165760, 174272, 201502, 217840, 230288, 248960, 287860, 348544, 403004, 435680, 460576, 503755, 575720, 806008, 871360, 921152, 1007510, 1151440, 1612016, 1742720, 1842304, 2015020, 2302880, 3224032, 4030040, 4605760, 6448064, 8060080, 9211520, 12896128, 16120160, 32240320, 64480640]

約数ペア:

[(1, 64480640), (2, 32240320), (4, 16120160), (5, 12896128), (7, 9211520), (8, 8060080), (10, 6448064), (14, 4605760), (16, 4030040), (20, 3224032), (28, 2302880), (32, 2015020), (35, 1842304), (37, 1742720), (40, 1612016), (56, 1151440), (64, 1007510), (70, 921152), (74, 871360), (80, 806008), (112, 575720), (128, 503755), (140, 460576), (148, 435680), (160, 403004), (185, 348544), (224, 287860), (259, 248960), (280, 230288), (296, 217840), (320, 201502), (370, 174272), (389, 165760), (448, 143930), (518, 124480), (560, 115144), (592, 108920), (640, 100751), (740, 87136), (778, 82880), (896, 71965), (1036, 62240), (1120, 57572), (1184, 54460), (1295, 49792), (1480, 43568), (1556, 41440), (1945, 33152), (2072, 31120), (2240, 28786), (2368, 27230), (2590, 24896), (2723, 23680), (2960, 21784), (3112, 20720), (3890, 16576), (4144, 15560), (4480, 14393), (4736, 13615), (5180, 12448), (5446, 11840), (5920, 10892), (6224, 10360), (7780, 8288)]