21389488

素因数分解:

$2^4\times {\mathrm{271}}^1\times {\mathrm{4933}}^1$

素因数の和:5212

約数の個数: 20

約数和(自身を含む): 41603488

約数和(自身を除く): 20214000

約数列:

[1, 2, 4, 8, 16, 271, 542, 1084, 2168, 4336, 4933, 9866, 19732, 39464, 78928, 1336843, 2673686, 5347372, 10694744, 21389488]

約数ペア:

[(1, 21389488), (2, 10694744), (4, 5347372), (8, 2673686), (16, 1336843), (271, 78928), (542, 39464), (1084, 19732), (2168, 9866), (4336, 4933)]