20840080

素因数分解:

$2^4\times 5^1\times {\mathrm{337}}^1\times {\mathrm{773}}^1$

素因数の和:1123

約数の個数: 40

約数和(自身を含む): 48659832

約数和(自身を除く): 27819752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 674, 773, 1348, 1546, 1685, 2696, 3092, 3370, 3865, 5392, 6184, 6740, 7730, 12368, 13480, 15460, 26960, 30920, 61840, 260501, 521002, 1042004, 1302505, 2084008, 2605010, 4168016, 5210020, 10420040, 20840080]

約数ペア:

[(1, 20840080), (2, 10420040), (4, 5210020), (5, 4168016), (8, 2605010), (10, 2084008), (16, 1302505), (20, 1042004), (40, 521002), (80, 260501), (337, 61840), (674, 30920), (773, 26960), (1348, 15460), (1546, 13480), (1685, 12368), (2696, 7730), (3092, 6740), (3370, 6184), (3865, 5392)]