20107775

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 25861440

約数和(自身を除く): 5753665

約数列:

[1, 5, 25, 47, 109, 157, 235, 545, 785, 1175, 2725, 3925, 5123, 7379, 17113, 25615, 36895, 85565, 128075, 184475, 427825, 804311, 4021555, 20107775]

約数ペア:

[(1, 20107775), (5, 4021555), (25, 804311), (47, 427825), (109, 184475), (157, 128075), (235, 85565), (545, 36895), (785, 25615), (1175, 17113), (2725, 7379), (3925, 5123)]