18719240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20347}}^1$

素因数の和:20381

約数の個数: 32

約数和(自身を含む): 43951680

約数和(自身を除く): 25232440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 20347, 40694, 81388, 101735, 162776, 203470, 406940, 467981, 813880, 935962, 1871924, 2339905, 3743848, 4679810, 9359620, 18719240]

約数ペア:

[(1, 18719240), (2, 9359620), (4, 4679810), (5, 3743848), (8, 2339905), (10, 1871924), (20, 935962), (23, 813880), (40, 467981), (46, 406940), (92, 203470), (115, 162776), (184, 101735), (230, 81388), (460, 40694), (920, 20347)]