20157405

素因数分解:

$3^1\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1657}}^1$

素因数の和:2476

約数の個数: 16

約数和(自身を含む): 32311104

約数和(自身を除く): 12153699

約数列:

[1, 3, 5, 15, 811, 1657, 2433, 4055, 4971, 8285, 12165, 24855, 1343827, 4031481, 6719135, 20157405]

約数ペア:

[(1, 20157405), (3, 6719135), (5, 4031481), (15, 1343827), (811, 24855), (1657, 12165), (2433, 8285), (4055, 4971)]