20801488

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21313}}^1$

素因数の和:21382

約数の個数: 20

約数和(自身を含む): 40965508

約数和(自身を除く): 20164020

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21313, 42626, 85252, 170504, 341008, 1300093, 2600186, 5200372, 10400744, 20801488]

約数ペア:

[(1, 20801488), (2, 10400744), (4, 5200372), (8, 2600186), (16, 1300093), (61, 341008), (122, 170504), (244, 85252), (488, 42626), (976, 21313)]