13990840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 34020000

約数和(自身を除く): 20029160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 449, 760, 779, 820, 898, 1558, 1640, 1796, 2245, 3116, 3592, 3895, 4490, 6232, 7790, 8531, 8980, 15580, 17062, 17960, 18409, 31160, 34124, 36818, 42655, 68248, 73636, 85310, 92045, 147272, 170620, 184090, 341240, 349771, 368180, 699542, 736360, 1399084, 1748855, 2798168, 3497710, 6995420, 13990840]

約数ペア:

[(1, 13990840), (2, 6995420), (4, 3497710), (5, 2798168), (8, 1748855), (10, 1399084), (19, 736360), (20, 699542), (38, 368180), (40, 349771), (41, 341240), (76, 184090), (82, 170620), (95, 147272), (152, 92045), (164, 85310), (190, 73636), (205, 68248), (328, 42655), (380, 36818), (410, 34124), (449, 31160), (760, 18409), (779, 17960), (820, 17062), (898, 15580), (1558, 8980), (1640, 8531), (1796, 7790), (2245, 6232), (3116, 4490), (3592, 3895)]