20883920

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{929}}^1$

素因数の和:1223

約数の個数: 40

約数和(自身を含む): 48780360

約数和(自身を除く): 27896440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 929, 1124, 1405, 1858, 2248, 2810, 3716, 4496, 4645, 5620, 7432, 9290, 11240, 14864, 18580, 22480, 37160, 74320, 261049, 522098, 1044196, 1305245, 2088392, 2610490, 4176784, 5220980, 10441960, 20883920]

約数ペア:

[(1, 20883920), (2, 10441960), (4, 5220980), (5, 4176784), (8, 2610490), (10, 2088392), (16, 1305245), (20, 1044196), (40, 522098), (80, 261049), (281, 74320), (562, 37160), (929, 22480), (1124, 18580), (1405, 14864), (1858, 11240), (2248, 9290), (2810, 7432), (3716, 5620), (4496, 4645)]