21137392

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77711}}^1$

素因数の和:77736

約数の個数: 20

約数和(自身を含む): 43363296

約数和(自身を除く): 22225904

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77711, 155422, 310844, 621688, 1243376, 1321087, 2642174, 5284348, 10568696, 21137392]

約数ペア:

[(1, 21137392), (2, 10568696), (4, 5284348), (8, 2642174), (16, 1321087), (17, 1243376), (34, 621688), (68, 310844), (136, 155422), (272, 77711)]