21256860639

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{523}}^1$

素因数の和:785

約数の個数: 96

約数和(自身を含む): 35602018816

約数和(自身を除く): 14345158177

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 181, 259, 289, 357, 523, 543, 629, 777, 867, 1267, 1569, 1887, 2023, 3077, 3661, 3801, 4403, 6069, 6697, 8891, 9231, 10693, 10983, 13209, 19351, 20091, 21539, 26673, 32079, 46879, 52309, 58053, 62237, 64617, 74851, 94663, 113849, 135457, 140637, 151147, 156927, 186711, 224553, 283989, 328967, 341547, 366163, 406371, 453441, 662641, 796943, 986901, 1058029, 1098489, 1609271, 1935433, 1987923, 2302769, 2390829, 3174087, 3502531, 4827813, 5592439, 5806299, 6908307, 10507593, 11264897, 13548031, 16777317, 24517717, 27357607, 33794691, 39147073, 40644093, 59543027, 73553151, 82072821, 117441219, 178629081, 191503249, 416801189, 574509747, 1012231459, 1250403567, 3036694377, 7085620213, 21256860639]

約数ペア:

[(1, 21256860639), (3, 7085620213), (7, 3036694377), (17, 1250403567), (21, 1012231459), (37, 574509747), (51, 416801189), (111, 191503249), (119, 178629081), (181, 117441219), (259, 82072821), (289, 73553151), (357, 59543027), (523, 40644093), (543, 39147073), (629, 33794691), (777, 27357607), (867, 24517717), (1267, 16777317), (1569, 13548031), (1887, 11264897), (2023, 10507593), (3077, 6908307), (3661, 5806299), (3801, 5592439), (4403, 4827813), (6069, 3502531), (6697, 3174087), (8891, 2390829), (9231, 2302769), (10693, 1987923), (10983, 1935433), (13209, 1609271), (19351, 1098489), (20091, 1058029), (21539, 986901), (26673, 796943), (32079, 662641), (46879, 453441), (52309, 406371), (58053, 366163), (62237, 341547), (64617, 328967), (74851, 283989), (94663, 224553), (113849, 186711), (135457, 156927), (140637, 151147)]