21041645

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3631}}^1$

素因数の和:3716

約数の個数: 16

約数和(自身を含む): 27022080

約数和(自身を除く): 5980435

約数列:

[1, 5, 19, 61, 95, 305, 1159, 3631, 5795, 18155, 68989, 221491, 344945, 1107455, 4208329, 21041645]

約数ペア:

[(1, 21041645), (5, 4208329), (19, 1107455), (61, 344945), (95, 221491), (305, 68989), (1159, 18155), (3631, 5795)]