20452425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{239}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 39045120

約数和(自身を除く): 18592695

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 163, 175, 239, 489, 525, 717, 815, 1141, 1195, 1673, 2445, 3423, 3585, 4075, 5019, 5705, 5975, 8365, 12225, 17115, 17925, 25095, 28525, 38957, 41825, 85575, 116871, 125475, 194785, 272699, 584355, 818097, 973925, 1363495, 2921775, 4090485, 6817475, 20452425]

約数ペア:

[(1, 20452425), (3, 6817475), (5, 4090485), (7, 2921775), (15, 1363495), (21, 973925), (25, 818097), (35, 584355), (75, 272699), (105, 194785), (163, 125475), (175, 116871), (239, 85575), (489, 41825), (525, 38957), (717, 28525), (815, 25095), (1141, 17925), (1195, 17115), (1673, 12225), (2445, 8365), (3423, 5975), (3585, 5705), (4075, 5019)]