21142175

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{443}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 27748224

約数和(自身を除く): 6606049

約数列:

[1, 5, 23, 25, 83, 115, 415, 443, 575, 1909, 2075, 2215, 9545, 10189, 11075, 36769, 47725, 50945, 183845, 254725, 845687, 919225, 4228435, 21142175]

約数ペア:

[(1, 21142175), (5, 4228435), (23, 919225), (25, 845687), (83, 254725), (115, 183845), (415, 50945), (443, 47725), (575, 36769), (1909, 11075), (2075, 10189), (2215, 9545)]