20327684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{907}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 38441088

約数和(自身を除く): 18113404

約数列:

[1, 2, 4, 13, 26, 52, 431, 862, 907, 1724, 1814, 3628, 5603, 11206, 11791, 22412, 23582, 47164, 390917, 781834, 1563668, 5081921, 10163842, 20327684]

約数ペア:

[(1, 20327684), (2, 10163842), (4, 5081921), (13, 1563668), (26, 781834), (52, 390917), (431, 47164), (862, 23582), (907, 22412), (1724, 11791), (1814, 11206), (3628, 5603)]