20996320

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{467}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 49886928

約数和(自身を除く): 28890608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 467, 562, 934, 1124, 1405, 1868, 2248, 2335, 2810, 3736, 4496, 4670, 5620, 7472, 8992, 9340, 11240, 14944, 18680, 22480, 37360, 44960, 74720, 131227, 262454, 524908, 656135, 1049816, 1312270, 2099632, 2624540, 4199264, 5249080, 10498160, 20996320]

約数ペア:

[(1, 20996320), (2, 10498160), (4, 5249080), (5, 4199264), (8, 2624540), (10, 2099632), (16, 1312270), (20, 1049816), (32, 656135), (40, 524908), (80, 262454), (160, 131227), (281, 74720), (467, 44960), (562, 37360), (934, 22480), (1124, 18680), (1405, 14944), (1868, 11240), (2248, 9340), (2335, 8992), (2810, 7472), (3736, 5620), (4496, 4670)]