20530665

素因数分解:

$3^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 37147968

約数和(自身を除く): 16617303

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 163, 311, 405, 489, 815, 933, 1467, 1555, 2445, 2799, 4401, 4665, 7335, 8397, 13203, 13995, 22005, 25191, 41985, 50693, 66015, 125955, 152079, 253465, 456237, 760395, 1368711, 2281185, 4106133, 6843555, 20530665]

約数ペア:

[(1, 20530665), (3, 6843555), (5, 4106133), (9, 2281185), (15, 1368711), (27, 760395), (45, 456237), (81, 253465), (135, 152079), (163, 125955), (311, 66015), (405, 50693), (489, 41985), (815, 25191), (933, 22005), (1467, 13995), (1555, 13203), (2445, 8397), (2799, 7335), (4401, 4665)]