18637521

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1$

素因数の和:901

約数の個数: 32

約数和(自身を含む): 30302208

約数和(自身を除く): 11664687

約数列:

[1, 3, 7, 21, 23, 47, 69, 141, 161, 329, 483, 821, 987, 1081, 2463, 3243, 5747, 7567, 17241, 18883, 22701, 38587, 56649, 115761, 132181, 270109, 396543, 810327, 887501, 2662503, 6212507, 18637521]

約数ペア:

[(1, 18637521), (3, 6212507), (7, 2662503), (21, 887501), (23, 810327), (47, 396543), (69, 270109), (141, 132181), (161, 115761), (329, 56649), (483, 38587), (821, 22701), (987, 18883), (1081, 17241), (2463, 7567), (3243, 5747)]