19989976

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{379}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 39672000

約数和(自身を除く): 19682024

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 347, 379, 694, 758, 1388, 1516, 2776, 3032, 6593, 7201, 13186, 14402, 26372, 28804, 52744, 57608, 131513, 263026, 526052, 1052104, 2498747, 4997494, 9994988, 19989976]

約数ペア:

[(1, 19989976), (2, 9994988), (4, 4997494), (8, 2498747), (19, 1052104), (38, 526052), (76, 263026), (152, 131513), (347, 57608), (379, 52744), (694, 28804), (758, 26372), (1388, 14402), (1516, 13186), (2776, 7201), (3032, 6593)]