81371997

素因数分解:

$3^2\times 7^2\times {\mathrm{184517}}^1$

素因数の和:184537

約数の個数: 18

約数和(自身を含む): 136727838

約数和(自身を除く): 55355841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 184517, 553551, 1291619, 1660653, 3874857, 9041333, 11624571, 27123999, 81371997]

約数ペア:

[(1, 81371997), (3, 27123999), (7, 11624571), (9, 9041333), (21, 3874857), (49, 1660653), (63, 1291619), (147, 553551), (441, 184517)]