19913478

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4817}}^1$

素因数の和:4888

約数の個数: 32

約数和(自身を含む): 43708896

約数和(自身を除く): 23795418

約数列:

[1, 2, 3, 6, 13, 26, 39, 53, 78, 106, 159, 318, 689, 1378, 2067, 4134, 4817, 9634, 14451, 28902, 62621, 125242, 187863, 255301, 375726, 510602, 765903, 1531806, 3318913, 6637826, 9956739, 19913478]

約数ペア:

[(1, 19913478), (2, 9956739), (3, 6637826), (6, 3318913), (13, 1531806), (26, 765903), (39, 510602), (53, 375726), (78, 255301), (106, 187863), (159, 125242), (318, 62621), (689, 28902), (1378, 14451), (2067, 9634), (4134, 4817)]