20171558

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21323}}^1$

素因数の和:21379

約数の個数: 16

約数和(自身を含む): 33777216

約数和(自身を除く): 13605658

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21323, 42646, 234553, 469106, 916889, 1833778, 10085779, 20171558]

約数ペア:

[(1, 20171558), (2, 10085779), (11, 1833778), (22, 916889), (43, 469106), (86, 234553), (473, 42646), (946, 21323)]