21557789145

素因数分解:

$3^4\times 5^1\times {\mathrm{907}}^1\times {\mathrm{58687}}^1$

素因数の和:59611

約数の個数: 40

約数和(自身を含む): 38687599104

約数和(自身を除く): 17129809959

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 907, 2721, 4535, 8163, 13605, 24489, 40815, 58687, 73467, 122445, 176061, 293435, 367335, 528183, 880305, 1584549, 2640915, 4753647, 7922745, 23768235, 53229109, 159687327, 266145545, 479061981, 798436635, 1437185943, 2395309905, 4311557829, 7185929715, 21557789145]

約数ペア:

[(1, 21557789145), (3, 7185929715), (5, 4311557829), (9, 2395309905), (15, 1437185943), (27, 798436635), (45, 479061981), (81, 266145545), (135, 159687327), (405, 53229109), (907, 23768235), (2721, 7922745), (4535, 4753647), (8163, 2640915), (13605, 1584549), (24489, 880305), (40815, 528183), (58687, 367335), (73467, 293435), (122445, 176061)]