21868580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26669}}^1$

素因数の和:26719

約数の個数: 24

約数和(自身を含む): 47045880

約数和(自身を除く): 25177300

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26669, 53338, 106676, 133345, 266690, 533380, 1093429, 2186858, 4373716, 5467145, 10934290, 21868580]

約数ペア:

[(1, 21868580), (2, 10934290), (4, 5467145), (5, 4373716), (10, 2186858), (20, 1093429), (41, 533380), (82, 266690), (164, 133345), (205, 106676), (410, 53338), (820, 26669)]