21081010

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 38892672

約数和(自身を除く): 17811662

約数列:

[1, 2, 5, 10, 97, 103, 194, 206, 211, 422, 485, 515, 970, 1030, 1055, 2110, 9991, 19982, 20467, 21733, 40934, 43466, 49955, 99910, 102335, 108665, 204670, 217330, 2108101, 4216202, 10540505, 21081010]

約数ペア:

[(1, 21081010), (2, 10540505), (5, 4216202), (10, 2108101), (97, 217330), (103, 204670), (194, 108665), (206, 102335), (211, 99910), (422, 49955), (485, 43466), (515, 40934), (970, 21733), (1030, 20467), (1055, 19982), (2110, 9991)]