19399280

素因数分解:

$2^4\times 5^1\times {\mathrm{242491}}^1$

素因数の和:242504

約数の個数: 20

約数和(自身を含む): 45103512

約数和(自身を除く): 25704232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242491, 484982, 969964, 1212455, 1939928, 2424910, 3879856, 4849820, 9699640, 19399280]

約数ペア:

[(1, 19399280), (2, 9699640), (4, 4849820), (5, 3879856), (8, 2424910), (10, 1939928), (16, 1212455), (20, 969964), (40, 484982), (80, 242491)]