289487781

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:887

約数の個数: 72

約数和(自身を含む): 512890560

約数和(自身を除く): 223402779

約数列:

[1, 3, 9, 11, 17, 19, 33, 51, 57, 99, 121, 153, 171, 187, 209, 323, 363, 561, 627, 823, 969, 1089, 1683, 1881, 2057, 2299, 2469, 2907, 3553, 6171, 6897, 7407, 9053, 10659, 13991, 15637, 18513, 20691, 27159, 31977, 39083, 41973, 46911, 81477, 99583, 117249, 125919, 140733, 153901, 172007, 265829, 298749, 351747, 461703, 516021, 797487, 896247, 1385109, 1548063, 1692911, 1892077, 2392461, 2924119, 5078733, 5676231, 8772357, 15236199, 17028693, 26317071, 32165309, 96495927, 289487781]

約数ペア:

[(1, 289487781), (3, 96495927), (9, 32165309), (11, 26317071), (17, 17028693), (19, 15236199), (33, 8772357), (51, 5676231), (57, 5078733), (99, 2924119), (121, 2392461), (153, 1892077), (171, 1692911), (187, 1548063), (209, 1385109), (323, 896247), (363, 797487), (561, 516021), (627, 461703), (823, 351747), (969, 298749), (1089, 265829), (1683, 172007), (1881, 153901), (2057, 140733), (2299, 125919), (2469, 117249), (2907, 99583), (3553, 81477), (6171, 46911), (6897, 41973), (7407, 39083), (9053, 31977), (10659, 27159), (13991, 20691), (15637, 18513)]