21357027

素因数分解:

$3^5\times {\mathrm{179}}^1\times {\mathrm{491}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 32235840

約数和(自身を除く): 10878813

約数列:

[1, 3, 9, 27, 81, 179, 243, 491, 537, 1473, 1611, 4419, 4833, 13257, 14499, 39771, 43497, 87889, 119313, 263667, 791001, 2373003, 7119009, 21357027]

約数ペア:

[(1, 21357027), (3, 7119009), (9, 2373003), (27, 791001), (81, 263667), (179, 119313), (243, 87889), (491, 43497), (537, 39771), (1473, 14499), (1611, 13257), (4419, 4833)]