21000830

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{269}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 39152160

約数和(自身を除く): 18151330

約数列:

[1, 2, 5, 10, 37, 74, 185, 211, 269, 370, 422, 538, 1055, 1345, 2110, 2690, 7807, 9953, 15614, 19906, 39035, 49765, 56759, 78070, 99530, 113518, 283795, 567590, 2100083, 4200166, 10500415, 21000830]

約数ペア:

[(1, 21000830), (2, 10500415), (5, 4200166), (10, 2100083), (37, 567590), (74, 283795), (185, 113518), (211, 99530), (269, 78070), (370, 56759), (422, 49765), (538, 39035), (1055, 19906), (1345, 15614), (2110, 9953), (2690, 7807)]