638876409

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{72707}}^1$

素因数の和:72840

約数の個数: 16

約数和(自身を含む): 889945920

約数和(自身を除く): 251069511

約数列:

[1, 3, 29, 87, 101, 303, 2929, 8787, 72707, 218121, 2108503, 6325509, 7343407, 22030221, 212958803, 638876409]

約数ペア:

[(1, 638876409), (3, 212958803), (29, 22030221), (87, 7343407), (101, 6325509), (303, 2108503), (2929, 218121), (8787, 72707)]