20485479

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 34013952

約数和(自身を除く): 13528473

約数列:

[1, 3, 7, 21, 23, 49, 69, 73, 83, 147, 161, 219, 249, 483, 511, 581, 1127, 1533, 1679, 1743, 1909, 3381, 3577, 4067, 5037, 5727, 6059, 10731, 11753, 12201, 13363, 18177, 35259, 40089, 42413, 82271, 93541, 127239, 139357, 246813, 280623, 296891, 418071, 890673, 975499, 2926497, 6828493, 20485479]

約数ペア:

[(1, 20485479), (3, 6828493), (7, 2926497), (21, 975499), (23, 890673), (49, 418071), (69, 296891), (73, 280623), (83, 246813), (147, 139357), (161, 127239), (219, 93541), (249, 82271), (483, 42413), (511, 40089), (581, 35259), (1127, 18177), (1533, 13363), (1679, 12201), (1743, 11753), (1909, 10731), (3381, 6059), (3577, 5727), (4067, 5037)]