51340880

素因数分解:

$2^4\times 5^1\times {\mathrm{641761}}^1$

素因数の和:641774

約数の個数: 20

約数和(自身を含む): 119367732

約数和(自身を除く): 68026852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641761, 1283522, 2567044, 3208805, 5134088, 6417610, 10268176, 12835220, 25670440, 51340880]

約数ペア:

[(1, 51340880), (2, 25670440), (4, 12835220), (5, 10268176), (8, 6417610), (10, 5134088), (16, 3208805), (20, 2567044), (40, 1283522), (80, 641761)]