20902545

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9883}}^1$

素因数の和:9941

約数の個数: 24

約数和(自身を含む): 37005696

約数和(自身を除く): 16103151

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9883, 29649, 49415, 88947, 148245, 444735, 464501, 1393503, 2322505, 4180509, 6967515, 20902545]

約数ペア:

[(1, 20902545), (3, 6967515), (5, 4180509), (9, 2322505), (15, 1393503), (45, 464501), (47, 444735), (141, 148245), (235, 88947), (423, 49415), (705, 29649), (2115, 9883)]