18439840

素因数分解:

$2^5\times 5^1\times {\mathrm{115249}}^1$

素因数の和:115264

約数の個数: 24

約数和(自身を含む): 43564500

約数和(自身を除く): 25124660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 115249, 230498, 460996, 576245, 921992, 1152490, 1843984, 2304980, 3687968, 4609960, 9219920, 18439840]

約数ペア:

[(1, 18439840), (2, 9219920), (4, 4609960), (5, 3687968), (8, 2304980), (10, 1843984), (16, 1152490), (20, 921992), (32, 576245), (40, 460996), (80, 230498), (160, 115249)]