21781160

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14717}}^1$

素因数の和:14765

約数の個数: 32

約数和(自身を含む): 50335560

約数和(自身を除く): 28554400

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14717, 29434, 58868, 73585, 117736, 147170, 294340, 544529, 588680, 1089058, 2178116, 2722645, 4356232, 5445290, 10890580, 21781160]

約数ペア:

[(1, 21781160), (2, 10890580), (4, 5445290), (5, 4356232), (8, 2722645), (10, 2178116), (20, 1089058), (37, 588680), (40, 544529), (74, 294340), (148, 147170), (185, 117736), (296, 73585), (370, 58868), (740, 29434), (1480, 14717)]