21011432

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15541}}^1$

素因数の和:15573

約数の個数: 24

約数和(自身を含む): 42662790

約数和(自身を除く): 21651358

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15541, 31082, 62164, 124328, 202033, 404066, 808132, 1616264, 2626429, 5252858, 10505716, 21011432]

約数ペア:

[(1, 21011432), (2, 10505716), (4, 5252858), (8, 2626429), (13, 1616264), (26, 808132), (52, 404066), (104, 202033), (169, 124328), (338, 62164), (676, 31082), (1352, 15541)]