16405645

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 21259800

約数和(自身を除く): 4854155

約数列:

[1, 5, 19, 61, 95, 149, 305, 361, 745, 1159, 1805, 2831, 5795, 9089, 14155, 22021, 45445, 53789, 110105, 172691, 268945, 863455, 3281129, 16405645]

約数ペア:

[(1, 16405645), (5, 3281129), (19, 863455), (61, 268945), (95, 172691), (149, 110105), (305, 53789), (361, 45445), (745, 22021), (1159, 14155), (1805, 9089), (2831, 5795)]