18883640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 44755200

約数和(自身を除く): 25871560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 73, 116, 145, 146, 223, 232, 290, 292, 365, 446, 580, 584, 730, 892, 1115, 1160, 1460, 1784, 2117, 2230, 2920, 4234, 4460, 6467, 8468, 8920, 10585, 12934, 16279, 16936, 21170, 25868, 32335, 32558, 42340, 51736, 64670, 65116, 81395, 84680, 129340, 130232, 162790, 258680, 325580, 472091, 651160, 944182, 1888364, 2360455, 3776728, 4720910, 9441820, 18883640]

約数ペア:

[(1, 18883640), (2, 9441820), (4, 4720910), (5, 3776728), (8, 2360455), (10, 1888364), (20, 944182), (29, 651160), (40, 472091), (58, 325580), (73, 258680), (116, 162790), (145, 130232), (146, 129340), (223, 84680), (232, 81395), (290, 65116), (292, 64670), (365, 51736), (446, 42340), (580, 32558), (584, 32335), (730, 25868), (892, 21170), (1115, 16936), (1160, 16279), (1460, 12934), (1784, 10585), (2117, 8920), (2230, 8468), (2920, 6467), (4234, 4460)]