51358480

素因数分解:

$2^4\times 5^1\times {\mathrm{641981}}^1$

素因数の和:641994

約数の個数: 20

約数和(自身を含む): 119408652

約数和(自身を除く): 68050172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641981, 1283962, 2567924, 3209905, 5135848, 6419810, 10271696, 12839620, 25679240, 51358480]

約数ペア:

[(1, 51358480), (2, 25679240), (4, 12839620), (5, 10271696), (8, 6419810), (10, 5135848), (16, 3209905), (20, 2567924), (40, 1283962), (80, 641981)]