66814640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:534

約数の個数: 80

約数和(自身を含む): 165391200

約数和(自身を除く): 98576560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 113, 152, 190, 226, 304, 380, 389, 452, 565, 760, 778, 904, 1130, 1520, 1556, 1808, 1945, 2147, 2260, 3112, 3890, 4294, 4520, 6224, 7391, 7780, 8588, 9040, 10735, 14782, 15560, 17176, 21470, 29564, 31120, 34352, 36955, 42940, 43957, 59128, 73910, 85880, 87914, 118256, 147820, 171760, 175828, 219785, 295640, 351656, 439570, 591280, 703312, 835183, 879140, 1670366, 1758280, 3340732, 3516560, 4175915, 6681464, 8351830, 13362928, 16703660, 33407320, 66814640]

約数ペア:

[(1, 66814640), (2, 33407320), (4, 16703660), (5, 13362928), (8, 8351830), (10, 6681464), (16, 4175915), (19, 3516560), (20, 3340732), (38, 1758280), (40, 1670366), (76, 879140), (80, 835183), (95, 703312), (113, 591280), (152, 439570), (190, 351656), (226, 295640), (304, 219785), (380, 175828), (389, 171760), (452, 147820), (565, 118256), (760, 87914), (778, 85880), (904, 73910), (1130, 59128), (1520, 43957), (1556, 42940), (1808, 36955), (1945, 34352), (2147, 31120), (2260, 29564), (3112, 21470), (3890, 17176), (4294, 15560), (4520, 14782), (6224, 10735), (7391, 9040), (7780, 8588)]