20684752

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{557}}^1$

素因数の和:787

約数の個数: 40

約数和(自身を含む): 44006112

約数和(自身を除く): 23321360

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 211, 422, 557, 844, 1114, 1688, 2228, 2321, 3376, 4456, 4642, 6127, 8912, 9284, 12254, 18568, 24508, 37136, 49016, 98032, 117527, 235054, 470108, 940216, 1292797, 1880432, 2585594, 5171188, 10342376, 20684752]

約数ペア:

[(1, 20684752), (2, 10342376), (4, 5171188), (8, 2585594), (11, 1880432), (16, 1292797), (22, 940216), (44, 470108), (88, 235054), (176, 117527), (211, 98032), (422, 49016), (557, 37136), (844, 24508), (1114, 18568), (1688, 12254), (2228, 9284), (2321, 8912), (3376, 6127), (4456, 4642)]