20217855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1153}}^1$

素因数の和:1335

約数の個数: 32

約数和(自身を含む): 37223424

約数和(自身を除く): 17005569

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 167, 501, 835, 1153, 1169, 2505, 3459, 3507, 5765, 5845, 8071, 17295, 17535, 24213, 40355, 121065, 192551, 577653, 962755, 1347857, 2888265, 4043571, 6739285, 20217855]

約数ペア:

[(1, 20217855), (3, 6739285), (5, 4043571), (7, 2888265), (15, 1347857), (21, 962755), (35, 577653), (105, 192551), (167, 121065), (501, 40355), (835, 24213), (1153, 17535), (1169, 17295), (2505, 8071), (3459, 5845), (3507, 5765)]