20653020725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{321073}}^1$

素因数の和:321197

約数の個数: 24

約数和(自身を含む): 26754454272

約数和(自身を除く): 6101433547

約数列:

[1, 5, 25, 31, 83, 155, 415, 775, 2075, 2573, 12865, 64325, 321073, 1605365, 8026825, 9953263, 26649059, 49766315, 133245295, 248831575, 666226475, 826120829, 4130604145, 20653020725]

約数ペア:

[(1, 20653020725), (5, 4130604145), (25, 826120829), (31, 666226475), (83, 248831575), (155, 133245295), (415, 49766315), (775, 26649059), (2075, 9953263), (2573, 8026825), (12865, 1605365), (64325, 321073)]