16639820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43789}}^1$

素因数の和:43817

約数の個数: 24

約数和(自身を含む): 36783600

約数和(自身を除く): 20143780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 43789, 87578, 175156, 218945, 437890, 831991, 875780, 1663982, 3327964, 4159955, 8319910, 16639820]

約数ペア:

[(1, 16639820), (2, 8319910), (4, 4159955), (5, 3327964), (10, 1663982), (19, 875780), (20, 831991), (38, 437890), (76, 218945), (95, 175156), (190, 87578), (380, 43789)]