21204924

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{135929}}^1$

素因数の和:135949

約数の個数: 24

約数和(自身を含む): 53284560

約数和(自身を除く): 32079636

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 135929, 271858, 407787, 543716, 815574, 1631148, 1767077, 3534154, 5301231, 7068308, 10602462, 21204924]

約数ペア:

[(1, 21204924), (2, 10602462), (3, 7068308), (4, 5301231), (6, 3534154), (12, 1767077), (13, 1631148), (26, 815574), (39, 543716), (52, 407787), (78, 271858), (156, 135929)]