21401180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26099}}^1$

素因数の和:26149

約数の個数: 24

約数和(自身を含む): 46040400

約数和(自身を除く): 24639220

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26099, 52198, 104396, 130495, 260990, 521980, 1070059, 2140118, 4280236, 5350295, 10700590, 21401180]

約数ペア:

[(1, 21401180), (2, 10700590), (4, 5350295), (5, 4280236), (10, 2140118), (20, 1070059), (41, 521980), (82, 260990), (164, 130495), (205, 104396), (410, 52198), (820, 26099)]