20017790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3581}}^1$

素因数の和:3644

約数の個数: 32

約数和(自身を含む): 39717216

約数和(自身を除く): 19699426

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3581, 5590, 7162, 17905, 35810, 46553, 93106, 153983, 232765, 307966, 465530, 769915, 1539830, 2001779, 4003558, 10008895, 20017790]

約数ペア:

[(1, 20017790), (2, 10008895), (5, 4003558), (10, 2001779), (13, 1539830), (26, 769915), (43, 465530), (65, 307966), (86, 232765), (130, 153983), (215, 93106), (430, 46553), (559, 35810), (1118, 17905), (2795, 7162), (3581, 5590)]