26580140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21787}}^1$

素因数の和:21857

約数の個数: 24

約数和(自身を含む): 56735952

約数和(自身を除く): 30155812

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 21787, 43574, 87148, 108935, 217870, 435740, 1329007, 2658014, 5316028, 6645035, 13290070, 26580140]

約数ペア:

[(1, 26580140), (2, 13290070), (4, 6645035), (5, 5316028), (10, 2658014), (20, 1329007), (61, 435740), (122, 217870), (244, 108935), (305, 87148), (610, 43574), (1220, 21787)]