20781018

素因数分解:

$2^1\times 3^2\times {\mathrm{569}}^1\times {\mathrm{2029}}^1$

素因数の和:2606

約数の個数: 24

約数和(自身を含む): 45126900

約数和(自身を除く): 24345882

約数列:

[1, 2, 3, 6, 9, 18, 569, 1138, 1707, 2029, 3414, 4058, 5121, 6087, 10242, 12174, 18261, 36522, 1154501, 2309002, 3463503, 6927006, 10390509, 20781018]

約数ペア:

[(1, 20781018), (2, 10390509), (3, 6927006), (6, 3463503), (9, 2309002), (18, 1154501), (569, 36522), (1138, 18261), (1707, 12174), (2029, 10242), (3414, 6087), (4058, 5121)]