21841090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128477}}^1$

素因数の和:128501

約数の個数: 16

約数和(自身を含む): 41626872

約数和(自身を除く): 19785782

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128477, 256954, 642385, 1284770, 2184109, 4368218, 10920545, 21841090]

約数ペア:

[(1, 21841090), (2, 10920545), (5, 4368218), (10, 2184109), (17, 1284770), (34, 642385), (85, 256954), (170, 128477)]