31890520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18541}}^1$

素因数の和:18595

約数の個数: 32

約数和(自身を含む): 73426320

約数和(自身を除く): 41535800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18541, 37082, 74164, 92705, 148328, 185410, 370820, 741640, 797263, 1594526, 3189052, 3986315, 6378104, 7972630, 15945260, 31890520]

約数ペア:

[(1, 31890520), (2, 15945260), (4, 7972630), (5, 6378104), (8, 3986315), (10, 3189052), (20, 1594526), (40, 797263), (43, 741640), (86, 370820), (172, 185410), (215, 148328), (344, 92705), (430, 74164), (860, 37082), (1720, 18541)]