20451825

素因数分解:

$3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:799

約数の個数: 48

約数和(自身を含む): 38539200

約数和(自身を除く): 18087375

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 135, 205, 225, 369, 615, 675, 739, 1025, 1107, 1845, 2217, 3075, 3695, 5535, 6651, 9225, 11085, 18475, 19953, 27675, 30299, 33255, 55425, 90897, 99765, 151495, 166275, 272691, 454485, 498825, 757475, 818073, 1363455, 2272425, 4090365, 6817275, 20451825]

約数ペア:

[(1, 20451825), (3, 6817275), (5, 4090365), (9, 2272425), (15, 1363455), (25, 818073), (27, 757475), (41, 498825), (45, 454485), (75, 272691), (123, 166275), (135, 151495), (205, 99765), (225, 90897), (369, 55425), (615, 33255), (675, 30299), (739, 27675), (1025, 19953), (1107, 18475), (1845, 11085), (2217, 9225), (3075, 6651), (3695, 5535)]