19390720

素因数分解:

$2^8\times 5^1\times {\mathrm{15149}}^1$

素因数の和:15170

約数の個数: 36

約数和(自身を含む): 46449900

約数和(自身を除く): 27059180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15149, 30298, 60596, 75745, 121192, 151490, 242384, 302980, 484768, 605960, 969536, 1211920, 1939072, 2423840, 3878144, 4847680, 9695360, 19390720]

約数ペア:

[(1, 19390720), (2, 9695360), (4, 4847680), (5, 3878144), (8, 2423840), (10, 1939072), (16, 1211920), (20, 969536), (32, 605960), (40, 484768), (64, 302980), (80, 242384), (128, 151490), (160, 121192), (256, 75745), (320, 60596), (640, 30298), (1280, 15149)]