19460987

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 24667776

約数和(自身を除く): 5206789

約数列:

[1, 7, 13, 49, 91, 137, 223, 637, 959, 1561, 1781, 2899, 6713, 10927, 12467, 20293, 30551, 87269, 142051, 213857, 397163, 1496999, 2780141, 19460987]

約数ペア:

[(1, 19460987), (7, 2780141), (13, 1496999), (49, 397163), (91, 213857), (137, 142051), (223, 87269), (637, 30551), (959, 20293), (1561, 12467), (1781, 10927), (2899, 6713)]