20140475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 26598000

約数和(自身を除く): 6457525

約数列:

[1, 5, 19, 25, 95, 109, 389, 475, 545, 1945, 2071, 2725, 7391, 9725, 10355, 36955, 42401, 51775, 184775, 212005, 805619, 1060025, 4028095, 20140475]

約数ペア:

[(1, 20140475), (5, 4028095), (19, 1060025), (25, 805619), (95, 212005), (109, 184775), (389, 51775), (475, 42401), (545, 36955), (1945, 10355), (2071, 9725), (2725, 7391)]