20658195

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4457}}^1$

素因数の和:4571

約数の個数: 24

約数和(自身を含む): 36163296

約数和(自身を除く): 15505101

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4457, 4635, 13371, 22285, 40113, 66855, 200565, 459071, 1377213, 2295355, 4131639, 6886065, 20658195]

約数ペア:

[(1, 20658195), (3, 6886065), (5, 4131639), (9, 2295355), (15, 1377213), (45, 459071), (103, 200565), (309, 66855), (515, 40113), (927, 22285), (1545, 13371), (4457, 4635)]