21868720

素因数分解:

$2^4\times 5^1\times {\mathrm{273359}}^1$

素因数の和:273372

約数の個数: 20

約数和(自身を含む): 50844960

約数和(自身を除く): 28976240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273359, 546718, 1093436, 1366795, 2186872, 2733590, 4373744, 5467180, 10934360, 21868720]

約数ペア:

[(1, 21868720), (2, 10934360), (4, 5467180), (5, 4373744), (8, 2733590), (10, 2186872), (16, 1366795), (20, 1093436), (40, 546718), (80, 273359)]