400991578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{121439}}^1$

素因数の和:121581

約数の個数: 16

約数和(自身を含む): 652861440

約数和(自身を除く): 251869862

約数列:

[1, 2, 13, 26, 127, 254, 1651, 3302, 121439, 242878, 1578707, 3157414, 15422753, 30845506, 200495789, 400991578]

約数ペア:

[(1, 400991578), (2, 200495789), (13, 30845506), (26, 15422753), (127, 3157414), (254, 1578707), (1651, 242878), (3302, 121439)]