20080905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 37013760

約数和(自身を除く): 16932855

約数列:

[1, 3, 5, 13, 15, 29, 39, 53, 65, 67, 87, 145, 159, 195, 201, 265, 335, 377, 435, 689, 795, 871, 1005, 1131, 1537, 1885, 1943, 2067, 2613, 3445, 3551, 4355, 4611, 5655, 5829, 7685, 9715, 10335, 10653, 13065, 17755, 19981, 23055, 25259, 29145, 46163, 53265, 59943, 75777, 99905, 102979, 126295, 138489, 230815, 299715, 308937, 378885, 514895, 692445, 1338727, 1544685, 4016181, 6693635, 20080905]

約数ペア:

[(1, 20080905), (3, 6693635), (5, 4016181), (13, 1544685), (15, 1338727), (29, 692445), (39, 514895), (53, 378885), (65, 308937), (67, 299715), (87, 230815), (145, 138489), (159, 126295), (195, 102979), (201, 99905), (265, 75777), (335, 59943), (377, 53265), (435, 46163), (689, 29145), (795, 25259), (871, 23055), (1005, 19981), (1131, 17755), (1537, 13065), (1885, 10653), (1943, 10335), (2067, 9715), (2613, 7685), (3445, 5829), (3551, 5655), (4355, 4611)]