28705105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2113}}^1$

素因数の和:2161

約数の個数: 32

約数和(自身を含む): 42618240

約数和(自身を除く): 13913135

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 143, 209, 247, 715, 1045, 1235, 2113, 2717, 10565, 13585, 23243, 27469, 40147, 116215, 137345, 200735, 302159, 441617, 521911, 1510795, 2208085, 2609555, 5741021, 28705105]

約数ペア:

[(1, 28705105), (5, 5741021), (11, 2609555), (13, 2208085), (19, 1510795), (55, 521911), (65, 441617), (95, 302159), (143, 200735), (209, 137345), (247, 116215), (715, 40147), (1045, 27469), (1235, 23243), (2113, 13585), (2717, 10565)]