655980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2$

素因数の和:83

約数の個数: 72

約数和(自身を含む): 2048592

約数和(自身を除く): 1392612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 841, 870, 1131, 1508, 1682, 1740, 1885, 2262, 2523, 3364, 3770, 4205, 4524, 5046, 5655, 7540, 8410, 10092, 10933, 11310, 12615, 16820, 21866, 22620, 25230, 32799, 43732, 50460, 54665, 65598, 109330, 131196, 163995, 218660, 327990, 655980]

約数ペア:

[(1, 655980), (2, 327990), (3, 218660), (4, 163995), (5, 131196), (6, 109330), (10, 65598), (12, 54665), (13, 50460), (15, 43732), (20, 32799), (26, 25230), (29, 22620), (30, 21866), (39, 16820), (52, 12615), (58, 11310), (60, 10933), (65, 10092), (78, 8410), (87, 7540), (116, 5655), (130, 5046), (145, 4524), (156, 4205), (174, 3770), (195, 3364), (260, 2523), (290, 2262), (348, 1885), (377, 1740), (390, 1682), (435, 1508), (580, 1131), (754, 870), (780, 841)]