21237550

素因数分解:

$2^1\times 5^2\times {\mathrm{269}}^1\times {\mathrm{1579}}^1$

素因数の和:1860

約数の個数: 24

約数和(自身を含む): 39673800

約数和(自身を除く): 18436250

約数列:

[1, 2, 5, 10, 25, 50, 269, 538, 1345, 1579, 2690, 3158, 6725, 7895, 13450, 15790, 39475, 78950, 424751, 849502, 2123755, 4247510, 10618775, 21237550]

約数ペア:

[(1, 21237550), (2, 10618775), (5, 4247510), (10, 2123755), (25, 849502), (50, 424751), (269, 78950), (538, 39475), (1345, 15790), (1579, 13450), (2690, 7895), (3158, 6725)]