20051975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 26581632

約数和(自身を除く): 6529657

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 811, 989, 1075, 4055, 4945, 18653, 20275, 24725, 34873, 93265, 174365, 466325, 802079, 871825, 4010395, 20051975]

約数ペア:

[(1, 20051975), (5, 4010395), (23, 871825), (25, 802079), (43, 466325), (115, 174365), (215, 93265), (575, 34873), (811, 24725), (989, 20275), (1075, 18653), (4055, 4945)]