1218425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 1708224

約数和(自身を除く): 489799

約数列:

[1, 5, 13, 23, 25, 65, 115, 163, 299, 325, 575, 815, 1495, 2119, 3749, 4075, 7475, 10595, 18745, 48737, 52975, 93725, 243685, 1218425]

約数ペア:

[(1, 1218425), (5, 243685), (13, 93725), (23, 52975), (25, 48737), (65, 18745), (115, 10595), (163, 7475), (299, 4075), (325, 3749), (575, 2119), (815, 1495)]