21134417409

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{3389}}^1$

素因数の和:3667

約数の個数: 72

約数和(自身を含む): 36172656000

約数和(自身を除く): 15038238591

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 179, 237, 441, 537, 553, 711, 1253, 1611, 1659, 3389, 3759, 3871, 4977, 8771, 10167, 11277, 11613, 14141, 23723, 26313, 30501, 34839, 42423, 71169, 78939, 98987, 127269, 166061, 213507, 267731, 296961, 498183, 606631, 692909, 803193, 890883, 1494549, 1819893, 1874117, 2078727, 2409579, 4246417, 5459679, 5622351, 6236181, 12739251, 13118819, 16867053, 29724919, 38217753, 39356457, 47923849, 89174757, 118069371, 143771547, 267524271, 335466943, 431314641, 1006400829, 2348268601, 3019202487, 7044805803, 21134417409]

約数ペア:

[(1, 21134417409), (3, 7044805803), (7, 3019202487), (9, 2348268601), (21, 1006400829), (49, 431314641), (63, 335466943), (79, 267524271), (147, 143771547), (179, 118069371), (237, 89174757), (441, 47923849), (537, 39356457), (553, 38217753), (711, 29724919), (1253, 16867053), (1611, 13118819), (1659, 12739251), (3389, 6236181), (3759, 5622351), (3871, 5459679), (4977, 4246417), (8771, 2409579), (10167, 2078727), (11277, 1874117), (11613, 1819893), (14141, 1494549), (23723, 890883), (26313, 803193), (30501, 692909), (34839, 606631), (42423, 498183), (71169, 296961), (78939, 267731), (98987, 213507), (127269, 166061)]