780494920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{877}}^1\times {\mathrm{1171}}^1$

素因数の和:2078

約数の個数: 64

約数和(自身を含む): 1852228800

約数和(自身を除く): 1071733880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 877, 1171, 1754, 2342, 3508, 4385, 4684, 5855, 7016, 8770, 9368, 11710, 16663, 17540, 22249, 23420, 33326, 35080, 44498, 46840, 66652, 83315, 88996, 111245, 133304, 166630, 177992, 222490, 333260, 444980, 666520, 889960, 1026967, 2053934, 4107868, 5134835, 8215736, 10269670, 19512373, 20539340, 39024746, 41078680, 78049492, 97561865, 156098984, 195123730, 390247460, 780494920]

約数ペア:

[(1, 780494920), (2, 390247460), (4, 195123730), (5, 156098984), (8, 97561865), (10, 78049492), (19, 41078680), (20, 39024746), (38, 20539340), (40, 19512373), (76, 10269670), (95, 8215736), (152, 5134835), (190, 4107868), (380, 2053934), (760, 1026967), (877, 889960), (1171, 666520), (1754, 444980), (2342, 333260), (3508, 222490), (4385, 177992), (4684, 166630), (5855, 133304), (7016, 111245), (8770, 88996), (9368, 83315), (11710, 66652), (16663, 46840), (17540, 44498), (22249, 35080), (23420, 33326)]