21865340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3323}}^1$

素因数の和:3386

約数の個数: 48

約数和(自身を含む): 53609472

約数和(自身を除く): 31744132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 3323, 6580, 6646, 13292, 16615, 23261, 33230, 46522, 66460, 93044, 116305, 156181, 232610, 312362, 465220, 624724, 780905, 1093267, 1561810, 2186534, 3123620, 4373068, 5466335, 10932670, 21865340]

約数ペア:

[(1, 21865340), (2, 10932670), (4, 5466335), (5, 4373068), (7, 3123620), (10, 2186534), (14, 1561810), (20, 1093267), (28, 780905), (35, 624724), (47, 465220), (70, 312362), (94, 232610), (140, 156181), (188, 116305), (235, 93044), (329, 66460), (470, 46522), (658, 33230), (940, 23261), (1316, 16615), (1645, 13292), (3290, 6646), (3323, 6580)]