408033620

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{21011}}^1$

素因数の和:21991

約数の個数: 24

約数和(自身を含む): 857793888

約数和(自身を除く): 449760268

約数列:

[1, 2, 4, 5, 10, 20, 971, 1942, 3884, 4855, 9710, 19420, 21011, 42022, 84044, 105055, 210110, 420220, 20401681, 40803362, 81606724, 102008405, 204016810, 408033620]

約数ペア:

[(1, 408033620), (2, 204016810), (4, 102008405), (5, 81606724), (10, 40803362), (20, 20401681), (971, 420220), (1942, 210110), (3884, 105055), (4855, 84044), (9710, 42022), (19420, 21011)]