20847195

素因数分解:

$3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1637}}^1$

素因数の和:1931

約数の個数: 24

約数和(自身を含む): 36284976

約数和(自身を除く): 15437781

約数列:

[1, 3, 5, 9, 15, 45, 283, 849, 1415, 1637, 2547, 4245, 4911, 8185, 12735, 14733, 24555, 73665, 463271, 1389813, 2316355, 4169439, 6949065, 20847195]

約数ペア:

[(1, 20847195), (3, 6949065), (5, 4169439), (9, 2316355), (15, 1389813), (45, 463271), (283, 73665), (849, 24555), (1415, 14733), (1637, 12735), (2547, 8185), (4245, 4911)]