21176380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1259}}^1$

素因数の和:1326

約数の個数: 36

約数和(自身を含む): 46093320

約数和(自身を除く): 24916940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1259, 1682, 2518, 3364, 4205, 5036, 6295, 8410, 12590, 16820, 25180, 36511, 73022, 146044, 182555, 365110, 730220, 1058819, 2117638, 4235276, 5294095, 10588190, 21176380]

約数ペア:

[(1, 21176380), (2, 10588190), (4, 5294095), (5, 4235276), (10, 2117638), (20, 1058819), (29, 730220), (58, 365110), (116, 182555), (145, 146044), (290, 73022), (580, 36511), (841, 25180), (1259, 16820), (1682, 12590), (2518, 8410), (3364, 6295), (4205, 5036)]