81631490

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1\times {\mathrm{541}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 149852160

約数和(自身を除く): 68220670

約数列:

[1, 2, 5, 10, 79, 158, 191, 382, 395, 541, 790, 955, 1082, 1910, 2705, 5410, 15089, 30178, 42739, 75445, 85478, 103331, 150890, 206662, 213695, 427390, 516655, 1033310, 8163149, 16326298, 40815745, 81631490]

約数ペア:

[(1, 81631490), (2, 40815745), (5, 16326298), (10, 8163149), (79, 1033310), (158, 516655), (191, 427390), (382, 213695), (395, 206662), (541, 150890), (790, 103331), (955, 85478), (1082, 75445), (1910, 42739), (2705, 30178), (5410, 15089)]