21495735

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28099}}^1$

素因数の和:28127

約数の個数: 24

約数和(自身を含む): 39452400

約数和(自身を除く): 17956665

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28099, 84297, 140495, 252891, 421485, 477683, 1264455, 1433049, 2388415, 4299147, 7165245, 21495735]

約数ペア:

[(1, 21495735), (3, 7165245), (5, 4299147), (9, 2388415), (15, 1433049), (17, 1264455), (45, 477683), (51, 421485), (85, 252891), (153, 140495), (255, 84297), (765, 28099)]