20891416

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28697}}^1$

素因数の和:28723

約数の個数: 32

約数和(自身を含む): 48212640

約数和(自身を除く): 27321224

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28697, 57394, 114788, 200879, 229576, 373061, 401758, 746122, 803516, 1492244, 1607032, 2611427, 2984488, 5222854, 10445708, 20891416]

約数ペア:

[(1, 20891416), (2, 10445708), (4, 5222854), (7, 2984488), (8, 2611427), (13, 1607032), (14, 1492244), (26, 803516), (28, 746122), (52, 401758), (56, 373061), (91, 229576), (104, 200879), (182, 114788), (364, 57394), (728, 28697)]