21869855

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{32887}}^1$

素因数の和:32918

約数の個数: 16

約数和(自身を含む): 31572480

約数和(自身を除く): 9702625

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 32887, 164435, 230209, 624853, 1151045, 3124265, 4373971, 21869855]

約数ペア:

[(1, 21869855), (5, 4373971), (7, 3124265), (19, 1151045), (35, 624853), (95, 230209), (133, 164435), (665, 32887)]