20311980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26041}}^1$

素因数の和:26066

約数の個数: 48

約数和(自身を含む): 61250784

約数和(自身を除く): 40938804

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26041, 52082, 78123, 104164, 130205, 156246, 260410, 312492, 338533, 390615, 520820, 677066, 781230, 1015599, 1354132, 1562460, 1692665, 2031198, 3385330, 4062396, 5077995, 6770660, 10155990, 20311980]

約数ペア:

[(1, 20311980), (2, 10155990), (3, 6770660), (4, 5077995), (5, 4062396), (6, 3385330), (10, 2031198), (12, 1692665), (13, 1562460), (15, 1354132), (20, 1015599), (26, 781230), (30, 677066), (39, 520820), (52, 390615), (60, 338533), (65, 312492), (78, 260410), (130, 156246), (156, 130205), (195, 104164), (260, 78123), (390, 52082), (780, 26041)]