21686577

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 14808783

約数列:

[1, 3, 11, 17, 29, 31, 33, 43, 51, 87, 93, 129, 187, 319, 341, 473, 493, 527, 561, 731, 899, 957, 1023, 1247, 1333, 1419, 1479, 1581, 2193, 2697, 3741, 3999, 5423, 5797, 8041, 9889, 13717, 14663, 15283, 16269, 17391, 21199, 22661, 24123, 29667, 38657, 41151, 43989, 45849, 63597, 67983, 115971, 168113, 233189, 249271, 425227, 504339, 657169, 699567, 747813, 1275681, 1971507, 7228859, 21686577]

約数ペア:

[(1, 21686577), (3, 7228859), (11, 1971507), (17, 1275681), (29, 747813), (31, 699567), (33, 657169), (43, 504339), (51, 425227), (87, 249271), (93, 233189), (129, 168113), (187, 115971), (319, 67983), (341, 63597), (473, 45849), (493, 43989), (527, 41151), (561, 38657), (731, 29667), (899, 24123), (957, 22661), (1023, 21199), (1247, 17391), (1333, 16269), (1419, 15283), (1479, 14663), (1581, 13717), (2193, 9889), (2697, 8041), (3741, 5797), (3999, 5423)]