21527560

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1597}}^1$

素因数の和:1945

約数の個数: 32

約数和(自身を含む): 48611160

約数和(自身を除く): 27083600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1597, 1685, 2696, 3194, 3370, 6388, 6740, 7985, 12776, 13480, 15970, 31940, 63880, 538189, 1076378, 2152756, 2690945, 4305512, 5381890, 10763780, 21527560]

約数ペア:

[(1, 21527560), (2, 10763780), (4, 5381890), (5, 4305512), (8, 2690945), (10, 2152756), (20, 1076378), (40, 538189), (337, 63880), (674, 31940), (1348, 15970), (1597, 13480), (1685, 12776), (2696, 7985), (3194, 6740), (3370, 6388)]