21335085

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^2$

素因数の和:362

約数の個数: 36

約数和(自身を含む): 39392028

約数和(自身を除く): 18056943

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 167, 255, 501, 765, 835, 1503, 2505, 2839, 7515, 8517, 14195, 25551, 27889, 42585, 83667, 127755, 139445, 251001, 418335, 474113, 1255005, 1422339, 2370565, 4267017, 7111695, 21335085]

約数ペア:

[(1, 21335085), (3, 7111695), (5, 4267017), (9, 2370565), (15, 1422339), (17, 1255005), (45, 474113), (51, 418335), (85, 251001), (153, 139445), (167, 127755), (255, 83667), (501, 42585), (765, 27889), (835, 25551), (1503, 14195), (2505, 8517), (2839, 7515)]