128971518

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{6287}}^1$

素因数の和:6568

約数の個数: 32

約数和(自身を含む): 278885376

約数和(自身を除く): 149913858

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 263, 526, 789, 1578, 3419, 6287, 6838, 10257, 12574, 18861, 20514, 37722, 81731, 163462, 245193, 490386, 1653481, 3306962, 4960443, 9920886, 21495253, 42990506, 64485759, 128971518]

約数ペア:

[(1, 128971518), (2, 64485759), (3, 42990506), (6, 21495253), (13, 9920886), (26, 4960443), (39, 3306962), (78, 1653481), (263, 490386), (526, 245193), (789, 163462), (1578, 81731), (3419, 37722), (6287, 20514), (6838, 18861), (10257, 12574)]