18151640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 44724960

約数和(自身を除く): 26573320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 521, 536, 670, 871, 1042, 1340, 1742, 2084, 2605, 2680, 3484, 4168, 4355, 5210, 6773, 6968, 8710, 10420, 13546, 17420, 20840, 27092, 33865, 34840, 34907, 54184, 67730, 69814, 135460, 139628, 174535, 270920, 279256, 349070, 453791, 698140, 907582, 1396280, 1815164, 2268955, 3630328, 4537910, 9075820, 18151640]

約数ペア:

[(1, 18151640), (2, 9075820), (4, 4537910), (5, 3630328), (8, 2268955), (10, 1815164), (13, 1396280), (20, 907582), (26, 698140), (40, 453791), (52, 349070), (65, 279256), (67, 270920), (104, 174535), (130, 139628), (134, 135460), (260, 69814), (268, 67730), (335, 54184), (520, 34907), (521, 34840), (536, 33865), (670, 27092), (871, 20840), (1042, 17420), (1340, 13546), (1742, 10420), (2084, 8710), (2605, 6968), (2680, 6773), (3484, 5210), (4168, 4355)]