81512680

素因数分解:

$2^3\times 5^1\times {\mathrm{853}}^1\times {\mathrm{2389}}^1$

素因数の和:3253

約数の個数: 32

約数和(自身を含む): 183695400

約数和(自身を除く): 102182720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 853, 1706, 2389, 3412, 4265, 4778, 6824, 8530, 9556, 11945, 17060, 19112, 23890, 34120, 47780, 95560, 2037817, 4075634, 8151268, 10189085, 16302536, 20378170, 40756340, 81512680]

約数ペア:

[(1, 81512680), (2, 40756340), (4, 20378170), (5, 16302536), (8, 10189085), (10, 8151268), (20, 4075634), (40, 2037817), (853, 95560), (1706, 47780), (2389, 34120), (3412, 23890), (4265, 19112), (4778, 17060), (6824, 11945), (8530, 9556)]