21958450

素因数分解:

$2^1\times 5^2\times {\mathrm{643}}^1\times {\mathrm{683}}^1$

素因数の和:1338

約数の個数: 24

約数和(自身を含む): 40966128

約数和(自身を除く): 19007678

約数列:

[1, 2, 5, 10, 25, 50, 643, 683, 1286, 1366, 3215, 3415, 6430, 6830, 16075, 17075, 32150, 34150, 439169, 878338, 2195845, 4391690, 10979225, 21958450]

約数ペア:

[(1, 21958450), (2, 10979225), (5, 4391690), (10, 2195845), (25, 878338), (50, 439169), (643, 34150), (683, 32150), (1286, 17075), (1366, 16075), (3215, 6830), (3415, 6430)]