18917782

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 31715712

約数和(自身を除く): 12797930

約数列:

[1, 2, 13, 26, 47, 94, 113, 137, 226, 274, 611, 1222, 1469, 1781, 2938, 3562, 5311, 6439, 10622, 12878, 15481, 30962, 69043, 83707, 138086, 167414, 201253, 402506, 727607, 1455214, 9458891, 18917782]

約数ペア:

[(1, 18917782), (2, 9458891), (13, 1455214), (26, 727607), (47, 402506), (94, 201253), (113, 167414), (137, 138086), (226, 83707), (274, 69043), (611, 30962), (1222, 15481), (1469, 12878), (1781, 10622), (2938, 6439), (3562, 5311)]