19729880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13331}}^1$

素因数の和:13379

約数の個数: 32

約数和(自身を含む): 45595440

約数和(自身を除く): 25865560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13331, 26662, 53324, 66655, 106648, 133310, 266620, 493247, 533240, 986494, 1972988, 2466235, 3945976, 4932470, 9864940, 19729880]

約数ペア:

[(1, 19729880), (2, 9864940), (4, 4932470), (5, 3945976), (8, 2466235), (10, 1972988), (20, 986494), (37, 533240), (40, 493247), (74, 266620), (148, 133310), (185, 106648), (296, 66655), (370, 53324), (740, 26662), (1480, 13331)]