128961

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:125

約数の個数: 24

約数和(自身を含む): 224640

約数和(自身を除く): 95679

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 89, 161, 207, 267, 483, 623, 801, 1449, 1869, 2047, 5607, 6141, 14329, 18423, 42987, 128961]

約数ペア:

[(1, 128961), (3, 42987), (7, 18423), (9, 14329), (21, 6141), (23, 5607), (63, 2047), (69, 1869), (89, 1449), (161, 801), (207, 623), (267, 483)]