19086220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13441}}^1$

素因数の和:13521

約数の個数: 24

約数和(自身を含む): 40648608

約数和(自身を除く): 21562388

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13441, 26882, 53764, 67205, 134410, 268820, 954311, 1908622, 3817244, 4771555, 9543110, 19086220]

約数ペア:

[(1, 19086220), (2, 9543110), (4, 4771555), (5, 3817244), (10, 1908622), (20, 954311), (71, 268820), (142, 134410), (284, 67205), (355, 53764), (710, 26882), (1420, 13441)]