20565722905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{144407}}^1$

素因数の和:144745

約数の個数: 32

約数和(自身を含む): 30471243264

約数和(自身を除く): 9905520359

約数列:

[1, 5, 7, 13, 35, 65, 91, 313, 455, 1565, 2191, 4069, 10955, 20345, 28483, 142415, 144407, 722035, 1010849, 1877291, 5054245, 9386455, 13141037, 45199391, 65705185, 225996955, 316395737, 587592083, 1581978685, 2937960415, 4113144581, 20565722905]

約数ペア:

[(1, 20565722905), (5, 4113144581), (7, 2937960415), (13, 1581978685), (35, 587592083), (65, 316395737), (91, 225996955), (313, 65705185), (455, 45199391), (1565, 13141037), (2191, 9386455), (4069, 5054245), (10955, 1877291), (20345, 1010849), (28483, 722035), (142415, 144407)]