15990820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19501}}^1$

素因数の和:19551

約数の個数: 24

約数和(自身を含む): 34401528

約数和(自身を除く): 18410708

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 19501, 39002, 78004, 97505, 195010, 390020, 799541, 1599082, 3198164, 3997705, 7995410, 15990820]

約数ペア:

[(1, 15990820), (2, 7995410), (4, 3997705), (5, 3198164), (10, 1599082), (20, 799541), (41, 390020), (82, 195010), (164, 97505), (205, 78004), (410, 39002), (820, 19501)]