20019225

素因数分解:

$3^1\times 5^2\times {\mathrm{293}}^1\times {\mathrm{911}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 33247872

約数和(自身を除く): 13228647

約数列:

[1, 3, 5, 15, 25, 75, 293, 879, 911, 1465, 2733, 4395, 4555, 7325, 13665, 21975, 22775, 68325, 266923, 800769, 1334615, 4003845, 6673075, 20019225]

約数ペア:

[(1, 20019225), (3, 6673075), (5, 4003845), (15, 1334615), (25, 800769), (75, 266923), (293, 68325), (879, 22775), (911, 21975), (1465, 13665), (2733, 7325), (4395, 4555)]