20665134

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{409}}^1$

素因数の和:825

約数の個数: 48

約数和(自身を含む): 51423840

約数和(自身を除く): 30758706

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 401, 409, 802, 818, 1203, 1227, 2406, 2454, 2807, 2863, 3609, 3681, 5614, 5726, 7218, 7362, 8421, 8589, 16842, 17178, 25263, 25767, 50526, 51534, 164009, 328018, 492027, 984054, 1148063, 1476081, 2296126, 2952162, 3444189, 6888378, 10332567, 20665134]

約数ペア:

[(1, 20665134), (2, 10332567), (3, 6888378), (6, 3444189), (7, 2952162), (9, 2296126), (14, 1476081), (18, 1148063), (21, 984054), (42, 492027), (63, 328018), (126, 164009), (401, 51534), (409, 50526), (802, 25767), (818, 25263), (1203, 17178), (1227, 16842), (2406, 8589), (2454, 8421), (2807, 7362), (2863, 7218), (3609, 5726), (3681, 5614)]