21128824

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3613}}^1$

素因数の和:3679

約数の個数: 32

約数和(自身を含む): 42934320

約数和(自身を除く): 21805496

約数列:

[1, 2, 4, 8, 17, 34, 43, 68, 86, 136, 172, 344, 731, 1462, 2924, 3613, 5848, 7226, 14452, 28904, 61421, 122842, 155359, 245684, 310718, 491368, 621436, 1242872, 2641103, 5282206, 10564412, 21128824]

約数ペア:

[(1, 21128824), (2, 10564412), (4, 5282206), (8, 2641103), (17, 1242872), (34, 621436), (43, 491368), (68, 310718), (86, 245684), (136, 155359), (172, 122842), (344, 61421), (731, 28904), (1462, 14452), (2924, 7226), (3613, 5848)]