21995830

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{26501}}^1$

素因数の和:26591

約数の個数: 16

約数和(自身を含む): 40071024

約数和(自身を除く): 18075194

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 26501, 53002, 132505, 265010, 2199583, 4399166, 10997915, 21995830]

約数ペア:

[(1, 21995830), (2, 10997915), (5, 4399166), (10, 2199583), (83, 265010), (166, 132505), (415, 53002), (830, 26501)]