21738580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3761}}^1$

素因数の和:3804

約数の個数: 36

約数和(自身を含む): 48507228

約数和(自身を除く): 26768648

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3761, 5780, 7522, 15044, 18805, 37610, 63937, 75220, 127874, 255748, 319685, 639370, 1086929, 1278740, 2173858, 4347716, 5434645, 10869290, 21738580]

約数ペア:

[(1, 21738580), (2, 10869290), (4, 5434645), (5, 4347716), (10, 2173858), (17, 1278740), (20, 1086929), (34, 639370), (68, 319685), (85, 255748), (170, 127874), (289, 75220), (340, 63937), (578, 37610), (1156, 18805), (1445, 15044), (2890, 7522), (3761, 5780)]