20315480

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3877}}^1$

素因数の和:4019

約数の個数: 32

約数和(自身を含む): 46070640

約数和(自身を除く): 25755160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3877, 5240, 7754, 15508, 19385, 31016, 38770, 77540, 155080, 507887, 1015774, 2031548, 2539435, 4063096, 5078870, 10157740, 20315480]

約数ペア:

[(1, 20315480), (2, 10157740), (4, 5078870), (5, 4063096), (8, 2539435), (10, 2031548), (20, 1015774), (40, 507887), (131, 155080), (262, 77540), (524, 38770), (655, 31016), (1048, 19385), (1310, 15508), (2620, 7754), (3877, 5240)]