51391240

素因数分解:

$2^3\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1307}}^1$

素因数の和:2301

約数の個数: 32

約数和(自身を含む): 115836480

約数和(自身を除く): 64445240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 983, 1307, 1966, 2614, 3932, 4915, 5228, 6535, 7864, 9830, 10456, 13070, 19660, 26140, 39320, 52280, 1284781, 2569562, 5139124, 6423905, 10278248, 12847810, 25695620, 51391240]

約数ペア:

[(1, 51391240), (2, 25695620), (4, 12847810), (5, 10278248), (8, 6423905), (10, 5139124), (20, 2569562), (40, 1284781), (983, 52280), (1307, 39320), (1966, 26140), (2614, 19660), (3932, 13070), (4915, 10456), (5228, 9830), (6535, 7864)]