21990225

素因数分解:

$3^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{2903}}^1$

素因数の和:3017

約数の個数: 24

約数和(自身を含む): 36729792

約数和(自身を除く): 14739567

約数列:

[1, 3, 5, 15, 25, 75, 101, 303, 505, 1515, 2525, 2903, 7575, 8709, 14515, 43545, 72575, 217725, 293203, 879609, 1466015, 4398045, 7330075, 21990225]

約数ペア:

[(1, 21990225), (3, 7330075), (5, 4398045), (15, 1466015), (25, 879609), (75, 293203), (101, 217725), (303, 72575), (505, 43545), (1515, 14515), (2525, 8709), (2903, 7575)]