21008295

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 48660480

約数和(自身を除く): 27652185

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 43, 45, 47, 55, 63, 77, 99, 105, 129, 135, 141, 165, 189, 215, 231, 235, 297, 301, 315, 329, 385, 387, 423, 473, 495, 517, 645, 693, 705, 903, 945, 987, 1155, 1161, 1269, 1419, 1485, 1505, 1551, 1645, 1935, 2021, 2079, 2115, 2365, 2585, 2709, 2961, 3311, 3465, 3619, 4257, 4515, 4653, 4935, 5805, 6063, 6345, 7095, 7755, 8127, 8883, 9933, 10105, 10395, 10857, 12771, 13545, 13959, 14147, 14805, 16555, 18095, 18189, 21285, 22231, 23265, 29799, 30315, 32571, 40635, 42441, 44415, 49665, 54285, 54567, 63855, 66693, 69795, 70735, 89397, 90945, 97713, 111155, 127323, 148995, 155617, 162855, 200079, 212205, 272835, 333465, 381969, 446985, 466851, 488565, 600237, 636615, 778085, 1000395, 1400553, 1909845, 2334255, 3001185, 4201659, 7002765, 21008295]

約数ペア:

[(1, 21008295), (3, 7002765), (5, 4201659), (7, 3001185), (9, 2334255), (11, 1909845), (15, 1400553), (21, 1000395), (27, 778085), (33, 636615), (35, 600237), (43, 488565), (45, 466851), (47, 446985), (55, 381969), (63, 333465), (77, 272835), (99, 212205), (105, 200079), (129, 162855), (135, 155617), (141, 148995), (165, 127323), (189, 111155), (215, 97713), (231, 90945), (235, 89397), (297, 70735), (301, 69795), (315, 66693), (329, 63855), (385, 54567), (387, 54285), (423, 49665), (473, 44415), (495, 42441), (517, 40635), (645, 32571), (693, 30315), (705, 29799), (903, 23265), (945, 22231), (987, 21285), (1155, 18189), (1161, 18095), (1269, 16555), (1419, 14805), (1485, 14147), (1505, 13959), (1551, 13545), (1645, 12771), (1935, 10857), (2021, 10395), (2079, 10105), (2115, 9933), (2365, 8883), (2585, 8127), (2709, 7755), (2961, 7095), (3311, 6345), (3465, 6063), (3619, 5805), (4257, 4935), (4515, 4653)]