20905275

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12119}}^1$

素因数の和:12155

約数の個数: 24

約数和(自身を含む): 36069120

約数和(自身を除く): 15163845

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12119, 36357, 60595, 181785, 278737, 302975, 836211, 908925, 1393685, 4181055, 6968425, 20905275]

約数ペア:

[(1, 20905275), (3, 6968425), (5, 4181055), (15, 1393685), (23, 908925), (25, 836211), (69, 302975), (75, 278737), (115, 181785), (345, 60595), (575, 36357), (1725, 12119)]