20717476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1667}}^1$

素因数の和:1923

約数の個数: 24

約数和(自身を含む): 39231360

約数和(自身を除く): 18513884

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1667, 3107, 3334, 6214, 6668, 12428, 21671, 43342, 86684, 398413, 796826, 1593652, 5179369, 10358738, 20717476]

約数ペア:

[(1, 20717476), (2, 10358738), (4, 5179369), (13, 1593652), (26, 796826), (52, 398413), (239, 86684), (478, 43342), (956, 21671), (1667, 12428), (3107, 6668), (3334, 6214)]