19381904

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71257}}^1$

素因数の和:71282

約数の個数: 20

約数和(自身を含む): 39761964

約数和(自身を除く): 20380060

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 71257, 142514, 285028, 570056, 1140112, 1211369, 2422738, 4845476, 9690952, 19381904]

約数ペア:

[(1, 19381904), (2, 9690952), (4, 4845476), (8, 2422738), (16, 1211369), (17, 1140112), (34, 570056), (68, 285028), (136, 142514), (272, 71257)]