21281026

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1873}}^1$

素因数の和:1930

約数の個数: 32

約数和(自身を含む): 37779840

約数和(自身を除く): 16498814

約数列:

[1, 2, 13, 19, 23, 26, 38, 46, 247, 299, 437, 494, 598, 874, 1873, 3746, 5681, 11362, 24349, 35587, 43079, 48698, 71174, 86158, 462631, 560027, 818501, 925262, 1120054, 1637002, 10640513, 21281026]

約数ペア:

[(1, 21281026), (2, 10640513), (13, 1637002), (19, 1120054), (23, 925262), (26, 818501), (38, 560027), (46, 462631), (247, 86158), (299, 71174), (437, 48698), (494, 43079), (598, 35587), (874, 24349), (1873, 11362), (3746, 5681)]