81811964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{9421}}^1$

素因数の和:9605

約数の個数: 24

約数和(自身を含む): 155123808

約数和(自身を除く): 73311844

約数列:

[1, 2, 4, 13, 26, 52, 167, 334, 668, 2171, 4342, 8684, 9421, 18842, 37684, 122473, 244946, 489892, 1573307, 3146614, 6293228, 20452991, 40905982, 81811964]

約数ペア:

[(1, 81811964), (2, 40905982), (4, 20452991), (13, 6293228), (26, 3146614), (52, 1573307), (167, 489892), (334, 244946), (668, 122473), (2171, 37684), (4342, 18842), (8684, 9421)]