20555775

素因数分解:

$3^4\times 5^2\times {\mathrm{10151}}^1$

素因数の和:10173

約数の個数: 30

約数和(自身を含む): 38080152

約数和(自身を除く): 17524377

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10151, 30453, 50755, 91359, 152265, 253775, 274077, 456795, 761325, 822231, 1370385, 2283975, 4111155, 6851925, 20555775]

約数ペア:

[(1, 20555775), (3, 6851925), (5, 4111155), (9, 2283975), (15, 1370385), (25, 822231), (27, 761325), (45, 456795), (75, 274077), (81, 253775), (135, 152265), (225, 91359), (405, 50755), (675, 30453), (2025, 10151)]