20176460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 24729940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 809, 860, 1247, 1618, 2494, 3236, 4045, 4988, 6235, 8090, 12470, 16180, 23461, 24940, 34787, 46922, 69574, 93844, 117305, 139148, 173935, 234610, 347870, 469220, 695740, 1008823, 2017646, 4035292, 5044115, 10088230, 20176460]

約数ペア:

[(1, 20176460), (2, 10088230), (4, 5044115), (5, 4035292), (10, 2017646), (20, 1008823), (29, 695740), (43, 469220), (58, 347870), (86, 234610), (116, 173935), (145, 139148), (172, 117305), (215, 93844), (290, 69574), (430, 46922), (580, 34787), (809, 24940), (860, 23461), (1247, 16180), (1618, 12470), (2494, 8090), (3236, 6235), (4045, 4988)]