4080741640

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{51343}}^1$

素因数の和:53341

約数の個数: 32

約数和(自身を含む): 9186468480

約数和(自身を除く): 5105726840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19870, 39740, 51343, 79480, 102686, 205372, 256715, 410744, 513430, 1026860, 2053720, 102018541, 204037082, 408074164, 510092705, 816148328, 1020185410, 2040370820, 4080741640]

約数ペア:

[(1, 4080741640), (2, 2040370820), (4, 1020185410), (5, 816148328), (8, 510092705), (10, 408074164), (20, 204037082), (40, 102018541), (1987, 2053720), (3974, 1026860), (7948, 513430), (9935, 410744), (15896, 256715), (19870, 205372), (39740, 102686), (51343, 79480)]