21940136

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 44439840

約数和(自身を除く): 22499704

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 107, 142, 152, 214, 284, 361, 428, 568, 722, 856, 1349, 1444, 2033, 2698, 2888, 4066, 5396, 7597, 8132, 10792, 15194, 16264, 25631, 30388, 38627, 51262, 60776, 77254, 102524, 144343, 154508, 205048, 288686, 309016, 577372, 1154744, 2742517, 5485034, 10970068, 21940136]

約数ペア:

[(1, 21940136), (2, 10970068), (4, 5485034), (8, 2742517), (19, 1154744), (38, 577372), (71, 309016), (76, 288686), (107, 205048), (142, 154508), (152, 144343), (214, 102524), (284, 77254), (361, 60776), (428, 51262), (568, 38627), (722, 30388), (856, 25631), (1349, 16264), (1444, 15194), (2033, 10792), (2698, 8132), (2888, 7597), (4066, 5396)]