19857735

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 16309305

約数列:

[1, 3, 5, 9, 15, 41, 45, 47, 123, 141, 205, 229, 235, 369, 423, 615, 687, 705, 1145, 1845, 1927, 2061, 2115, 3435, 5781, 9389, 9635, 10305, 10763, 17343, 28167, 28905, 32289, 46945, 53815, 84501, 86715, 96867, 140835, 161445, 422505, 441283, 484335, 1323849, 2206415, 3971547, 6619245, 19857735]

約数ペア:

[(1, 19857735), (3, 6619245), (5, 3971547), (9, 2206415), (15, 1323849), (41, 484335), (45, 441283), (47, 422505), (123, 161445), (141, 140835), (205, 96867), (229, 86715), (235, 84501), (369, 53815), (423, 46945), (615, 32289), (687, 28905), (705, 28167), (1145, 17343), (1845, 10763), (1927, 10305), (2061, 9635), (2115, 9389), (3435, 5781)]