128758520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{719}}^1$

素因数の和:789

約数の個数: 96

約数和(自身を含む): 327499200

約数和(自身を除く): 198740680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 121, 148, 185, 220, 242, 296, 370, 407, 440, 484, 605, 719, 740, 814, 968, 1210, 1438, 1480, 1628, 2035, 2420, 2876, 3256, 3595, 4070, 4477, 4840, 5752, 7190, 7909, 8140, 8954, 14380, 15818, 16280, 17908, 22385, 26603, 28760, 31636, 35816, 39545, 44770, 53206, 63272, 79090, 86999, 89540, 106412, 133015, 158180, 173998, 179080, 212824, 266030, 292633, 316360, 347996, 434995, 532060, 585266, 695992, 869990, 1064120, 1170532, 1463165, 1739980, 2341064, 2926330, 3218963, 3479960, 5852660, 6437926, 11705320, 12875852, 16094815, 25751704, 32189630, 64379260, 128758520]

約数ペア:

[(1, 128758520), (2, 64379260), (4, 32189630), (5, 25751704), (8, 16094815), (10, 12875852), (11, 11705320), (20, 6437926), (22, 5852660), (37, 3479960), (40, 3218963), (44, 2926330), (55, 2341064), (74, 1739980), (88, 1463165), (110, 1170532), (121, 1064120), (148, 869990), (185, 695992), (220, 585266), (242, 532060), (296, 434995), (370, 347996), (407, 316360), (440, 292633), (484, 266030), (605, 212824), (719, 179080), (740, 173998), (814, 158180), (968, 133015), (1210, 106412), (1438, 89540), (1480, 86999), (1628, 79090), (2035, 63272), (2420, 53206), (2876, 44770), (3256, 39545), (3595, 35816), (4070, 31636), (4477, 28760), (4840, 26603), (5752, 22385), (7190, 17908), (7909, 16280), (8140, 15818), (8954, 14380)]