21206493

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 38817792

約数和(自身を除く): 17611299

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 71, 77, 99, 213, 231, 431, 497, 639, 693, 781, 1293, 1491, 2343, 3017, 3879, 4473, 4741, 5467, 7029, 9051, 14223, 16401, 27153, 30601, 33187, 42669, 49203, 91803, 99561, 214207, 275409, 298683, 336611, 642621, 1009833, 1927863, 2356277, 3029499, 7068831, 21206493]

約数ペア:

[(1, 21206493), (3, 7068831), (7, 3029499), (9, 2356277), (11, 1927863), (21, 1009833), (33, 642621), (63, 336611), (71, 298683), (77, 275409), (99, 214207), (213, 99561), (231, 91803), (431, 49203), (497, 42669), (639, 33187), (693, 30601), (781, 27153), (1293, 16401), (1491, 14223), (2343, 9051), (3017, 7029), (3879, 5467), (4473, 4741)]