20465685

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8581}}^1$

素因数の和:8645

約数の個数: 24

約数和(自身を含む): 36147384

約数和(自身を除く): 15681699

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 8581, 25743, 42905, 77229, 128715, 386145, 454793, 1364379, 2273965, 4093137, 6821895, 20465685]

約数ペア:

[(1, 20465685), (3, 6821895), (5, 4093137), (9, 2273965), (15, 1364379), (45, 454793), (53, 386145), (159, 128715), (265, 77229), (477, 42905), (795, 25743), (2385, 8581)]