661960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:110

約数の個数: 64

約数和(自身を含む): 1713600

約数和(自身を除く): 1051640

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 67, 76, 95, 104, 130, 134, 152, 190, 247, 260, 268, 335, 380, 494, 520, 536, 670, 760, 871, 988, 1235, 1273, 1340, 1742, 1976, 2470, 2546, 2680, 3484, 4355, 4940, 5092, 6365, 6968, 8710, 9880, 10184, 12730, 16549, 17420, 25460, 33098, 34840, 50920, 66196, 82745, 132392, 165490, 330980, 661960]

約数ペア:

[(1, 661960), (2, 330980), (4, 165490), (5, 132392), (8, 82745), (10, 66196), (13, 50920), (19, 34840), (20, 33098), (26, 25460), (38, 17420), (40, 16549), (52, 12730), (65, 10184), (67, 9880), (76, 8710), (95, 6968), (104, 6365), (130, 5092), (134, 4940), (152, 4355), (190, 3484), (247, 2680), (260, 2546), (268, 2470), (335, 1976), (380, 1742), (494, 1340), (520, 1273), (536, 1235), (670, 988), (760, 871)]