20838515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{4019}}^1$

素因数の和:4102

約数の個数: 16

約数和(自身を含む): 26917920

約数和(自身を除く): 6079405

約数列:

[1, 5, 17, 61, 85, 305, 1037, 4019, 5185, 20095, 68323, 245159, 341615, 1225795, 4167703, 20838515]

約数ペア:

[(1, 20838515), (5, 4167703), (17, 1225795), (61, 341615), (85, 245159), (305, 68323), (1037, 20095), (4019, 5185)]