20181465620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1861}}^1\times {\mathrm{17491}}^1$

素因数の和:19392

約数の個数: 48

約数和(自身を含む): 43774219776

約数和(自身を除く): 23592754156

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1861, 3722, 7444, 9305, 17491, 18610, 34982, 37220, 57691, 69964, 87455, 115382, 174910, 230764, 288455, 349820, 542221, 576910, 1084442, 1153820, 2168884, 2711105, 5422210, 10844420, 32550751, 65101502, 130203004, 162753755, 325507510, 651015020, 1009073281, 2018146562, 4036293124, 5045366405, 10090732810, 20181465620]

約数ペア:

[(1, 20181465620), (2, 10090732810), (4, 5045366405), (5, 4036293124), (10, 2018146562), (20, 1009073281), (31, 651015020), (62, 325507510), (124, 162753755), (155, 130203004), (310, 65101502), (620, 32550751), (1861, 10844420), (3722, 5422210), (7444, 2711105), (9305, 2168884), (17491, 1153820), (18610, 1084442), (34982, 576910), (37220, 542221), (57691, 349820), (69964, 288455), (87455, 230764), (115382, 174910)]