81295641

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{7459}}^1$

素因数の和:7645

約数の個数: 24

約数和(自身を含む): 134996160

約数和(自身を除く): 53700519

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 3633, 7459, 10899, 22377, 52213, 67131, 156639, 469917, 1290407, 3871221, 9032849, 11613663, 27098547, 81295641]

約数ペア:

[(1, 81295641), (3, 27098547), (7, 11613663), (9, 9032849), (21, 3871221), (63, 1290407), (173, 469917), (519, 156639), (1211, 67131), (1557, 52213), (3633, 22377), (7459, 10899)]