18866475

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1181}}^1$

素因数の和:1268

約数の個数: 36

約数和(自身を含む): 34296912

約数和(自身を除く): 15430437

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1181, 1775, 3195, 3543, 5325, 5905, 10629, 15975, 17715, 29525, 53145, 83851, 88575, 251553, 265725, 419255, 754659, 1257765, 2096275, 3773295, 6288825, 18866475]

約数ペア:

[(1, 18866475), (3, 6288825), (5, 3773295), (9, 2096275), (15, 1257765), (25, 754659), (45, 419255), (71, 265725), (75, 251553), (213, 88575), (225, 83851), (355, 53145), (639, 29525), (1065, 17715), (1181, 15975), (1775, 10629), (3195, 5905), (3543, 5325)]