20998706

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 34898688

約数和(自身を除く): 13899982

約数列:

[1, 2, 17, 34, 43, 53, 86, 106, 271, 542, 731, 901, 1462, 1802, 2279, 4558, 4607, 9214, 11653, 14363, 23306, 28726, 38743, 77486, 198101, 244171, 396202, 488342, 617609, 1235218, 10499353, 20998706]

約数ペア:

[(1, 20998706), (2, 10499353), (17, 1235218), (34, 617609), (43, 488342), (53, 396202), (86, 244171), (106, 198101), (271, 77486), (542, 38743), (731, 28726), (901, 23306), (1462, 14363), (1802, 11653), (2279, 9214), (4558, 4607)]