128545820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{494407}}^1$

素因数の和:494429

約数の個数: 24

約数和(自身を含む): 290711904

約数和(自身を除く): 162166084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 494407, 988814, 1977628, 2472035, 4944070, 6427291, 9888140, 12854582, 25709164, 32136455, 64272910, 128545820]

約数ペア:

[(1, 128545820), (2, 64272910), (4, 32136455), (5, 25709164), (10, 12854582), (13, 9888140), (20, 6427291), (26, 4944070), (52, 2472035), (65, 1977628), (130, 988814), (260, 494407)]