201212781

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 350355456

約数和(自身を除く): 149142675

約数列:

[1, 3, 7, 11, 21, 33, 43, 47, 77, 129, 141, 231, 301, 329, 431, 473, 517, 903, 987, 1293, 1419, 1551, 2021, 3017, 3311, 3619, 4741, 6063, 9051, 9933, 10857, 14147, 14223, 18533, 20257, 22231, 33187, 42441, 55599, 60771, 66693, 99561, 129731, 141799, 155617, 203863, 222827, 389193, 425397, 466851, 611589, 668481, 871051, 1427041, 1559789, 2613153, 4281123, 4679367, 6097357, 9581561, 18292071, 28744683, 67070927, 201212781]

約数ペア:

[(1, 201212781), (3, 67070927), (7, 28744683), (11, 18292071), (21, 9581561), (33, 6097357), (43, 4679367), (47, 4281123), (77, 2613153), (129, 1559789), (141, 1427041), (231, 871051), (301, 668481), (329, 611589), (431, 466851), (473, 425397), (517, 389193), (903, 222827), (987, 203863), (1293, 155617), (1419, 141799), (1551, 129731), (2021, 99561), (3017, 66693), (3311, 60771), (3619, 55599), (4741, 42441), (6063, 33187), (9051, 22231), (9933, 20257), (10857, 18533), (14147, 14223)]