21157180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5657}}^1$

素因数の和:5694

約数の個数: 48

約数和(自身を含む): 51329376

約数和(自身を除く): 30172196

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5657, 11314, 22628, 28285, 56570, 62227, 96169, 113140, 124454, 192338, 248908, 311135, 384676, 480845, 622270, 961690, 1057859, 1244540, 1923380, 2115718, 4231436, 5289295, 10578590, 21157180]

約数ペア:

[(1, 21157180), (2, 10578590), (4, 5289295), (5, 4231436), (10, 2115718), (11, 1923380), (17, 1244540), (20, 1057859), (22, 961690), (34, 622270), (44, 480845), (55, 384676), (68, 311135), (85, 248908), (110, 192338), (170, 124454), (187, 113140), (220, 96169), (340, 62227), (374, 56570), (748, 28285), (935, 22628), (1870, 11314), (3740, 5657)]