31015640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 72264960

約数和(自身を除く): 41249320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 71, 134, 142, 163, 268, 284, 326, 335, 355, 536, 568, 652, 670, 710, 815, 1304, 1340, 1420, 1630, 2680, 2840, 3260, 4757, 6520, 9514, 10921, 11573, 19028, 21842, 23146, 23785, 38056, 43684, 46292, 47570, 54605, 57865, 87368, 92584, 95140, 109210, 115730, 190280, 218420, 231460, 436840, 462920, 775391, 1550782, 3101564, 3876955, 6203128, 7753910, 15507820, 31015640]

約数ペア:

[(1, 31015640), (2, 15507820), (4, 7753910), (5, 6203128), (8, 3876955), (10, 3101564), (20, 1550782), (40, 775391), (67, 462920), (71, 436840), (134, 231460), (142, 218420), (163, 190280), (268, 115730), (284, 109210), (326, 95140), (335, 92584), (355, 87368), (536, 57865), (568, 54605), (652, 47570), (670, 46292), (710, 43684), (815, 38056), (1304, 23785), (1340, 23146), (1420, 21842), (1630, 19028), (2680, 11573), (2840, 10921), (3260, 9514), (4757, 6520)]