21432784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78797}}^1$

素因数の和:78822

約数の個数: 20

約数和(自身を含む): 43969284

約数和(自身を除く): 22536500

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78797, 157594, 315188, 630376, 1260752, 1339549, 2679098, 5358196, 10716392, 21432784]

約数ペア:

[(1, 21432784), (2, 10716392), (4, 5358196), (8, 2679098), (16, 1339549), (17, 1260752), (34, 630376), (68, 315188), (136, 157594), (272, 78797)]