19707964

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{12601}}^1$

素因数の和:12645

約数の個数: 24

約数和(自身を含む): 38108448

約数和(自身を除く): 18400484

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 391, 782, 1564, 12601, 25202, 50404, 214217, 289823, 428434, 579646, 856868, 1159292, 4926991, 9853982, 19707964]

約数ペア:

[(1, 19707964), (2, 9853982), (4, 4926991), (17, 1159292), (23, 856868), (34, 579646), (46, 428434), (68, 289823), (92, 214217), (391, 50404), (782, 25202), (1564, 12601)]