21721578

素因数分解:

$2^1\times 3^1\times {\mathrm{157}}^1\times {\mathrm{23059}}^1$

素因数の和:23221

約数の個数: 16

約数和(自身を含む): 43721760

約数和(自身を除く): 22000182

約数列:

[1, 2, 3, 6, 157, 314, 471, 942, 23059, 46118, 69177, 138354, 3620263, 7240526, 10860789, 21721578]

約数ペア:

[(1, 21721578), (2, 10860789), (3, 7240526), (6, 3620263), (157, 138354), (314, 69177), (471, 46118), (942, 23059)]