21160784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77797}}^1$

素因数の和:77822

約数の個数: 20

約数和(自身を含む): 43411284

約数和(自身を除く): 22250500

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77797, 155594, 311188, 622376, 1244752, 1322549, 2645098, 5290196, 10580392, 21160784]

約数ペア:

[(1, 21160784), (2, 10580392), (4, 5290196), (8, 2645098), (16, 1322549), (17, 1244752), (34, 622376), (68, 311188), (136, 155594), (272, 77797)]