81506516

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223919}}^1$

素因数の和:223943

約数の個数: 24

約数和(自身を含む): 175553280

約数和(自身を除く): 94046764

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 223919, 447838, 895676, 1567433, 2910947, 3134866, 5821894, 6269732, 11643788, 20376629, 40753258, 81506516]

約数ペア:

[(1, 81506516), (2, 40753258), (4, 20376629), (7, 11643788), (13, 6269732), (14, 5821894), (26, 3134866), (28, 2910947), (52, 1567433), (91, 895676), (182, 447838), (364, 223919)]