21287050

素因数分解:

$2^1\times 5^2\times {\mathrm{271}}^1\times {\mathrm{1571}}^1$

素因数の和:1854

約数の個数: 24

約数和(自身を含む): 39765312

約数和(自身を除く): 18478262

約数列:

[1, 2, 5, 10, 25, 50, 271, 542, 1355, 1571, 2710, 3142, 6775, 7855, 13550, 15710, 39275, 78550, 425741, 851482, 2128705, 4257410, 10643525, 21287050]

約数ペア:

[(1, 21287050), (2, 10643525), (5, 4257410), (10, 2128705), (25, 851482), (50, 425741), (271, 78550), (542, 39275), (1355, 15710), (1571, 13550), (2710, 7855), (3142, 6775)]