20668310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{919}}^1$

素因数の和:1112

約数の個数: 32

約数和(自身を含む): 40340160

約数和(自身を除く): 19671850

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 173, 346, 865, 919, 1730, 1838, 2249, 4498, 4595, 9190, 11245, 11947, 22490, 23894, 59735, 119470, 158987, 317974, 794935, 1589870, 2066831, 4133662, 10334155, 20668310]

約数ペア:

[(1, 20668310), (2, 10334155), (5, 4133662), (10, 2066831), (13, 1589870), (26, 794935), (65, 317974), (130, 158987), (173, 119470), (346, 59735), (865, 23894), (919, 22490), (1730, 11947), (1838, 11245), (2249, 9190), (4498, 4595)]