21849425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 9815215

約数列:

[1, 5, 13, 23, 25, 37, 65, 79, 115, 185, 299, 325, 395, 481, 575, 851, 925, 1027, 1495, 1817, 1975, 2405, 2923, 4255, 5135, 7475, 9085, 11063, 12025, 14615, 21275, 23621, 25675, 37999, 45425, 55315, 67229, 73075, 118105, 189995, 276575, 336145, 590525, 873977, 949975, 1680725, 4369885, 21849425]

約数ペア:

[(1, 21849425), (5, 4369885), (13, 1680725), (23, 949975), (25, 873977), (37, 590525), (65, 336145), (79, 276575), (115, 189995), (185, 118105), (299, 73075), (325, 67229), (395, 55315), (481, 45425), (575, 37999), (851, 25675), (925, 23621), (1027, 21275), (1495, 14615), (1817, 12025), (1975, 11063), (2405, 9085), (2923, 7475), (4255, 5135)]