20256860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4583}}^1$

素因数の和:4622

約数の個数: 48

約数和(自身を含む): 48517056

約数和(自身を除く): 28260196

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4583, 9166, 18332, 22915, 45830, 59579, 77911, 91660, 119158, 155822, 238316, 297895, 311644, 389555, 595790, 779110, 1012843, 1191580, 1558220, 2025686, 4051372, 5064215, 10128430, 20256860]

約数ペア:

[(1, 20256860), (2, 10128430), (4, 5064215), (5, 4051372), (10, 2025686), (13, 1558220), (17, 1191580), (20, 1012843), (26, 779110), (34, 595790), (52, 389555), (65, 311644), (68, 297895), (85, 238316), (130, 155822), (170, 119158), (221, 91660), (260, 77911), (340, 59579), (442, 45830), (884, 22915), (1105, 18332), (2210, 9166), (4420, 4583)]