31387980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40241}}^1$

素因数の和:40266

約数の個数: 48

約数和(自身を含む): 94649184

約数和(自身を除く): 63261204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 40241, 80482, 120723, 160964, 201205, 241446, 402410, 482892, 523133, 603615, 804820, 1046266, 1207230, 1569399, 2092532, 2414460, 2615665, 3138798, 5231330, 6277596, 7846995, 10462660, 15693990, 31387980]

約数ペア:

[(1, 31387980), (2, 15693990), (3, 10462660), (4, 7846995), (5, 6277596), (6, 5231330), (10, 3138798), (12, 2615665), (13, 2414460), (15, 2092532), (20, 1569399), (26, 1207230), (30, 1046266), (39, 804820), (52, 603615), (60, 523133), (65, 482892), (78, 402410), (130, 241446), (156, 201205), (195, 160964), (260, 120723), (390, 80482), (780, 40241)]