20504775

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2087}}^1$

素因数の和:2231

約数の個数: 24

約数和(自身を含む): 34176384

約数和(自身を除く): 13671609

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2087, 3275, 6261, 9825, 10435, 31305, 52175, 156525, 273397, 820191, 1366985, 4100955, 6834925, 20504775]

約数ペア:

[(1, 20504775), (3, 6834925), (5, 4100955), (15, 1366985), (25, 820191), (75, 273397), (131, 156525), (393, 52175), (655, 31305), (1965, 10435), (2087, 9825), (3275, 6261)]