28297440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:521

約数の個数: 144

約数和(自身を含む): 99026928

約数和(自身を除く): 70729488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 96, 120, 129, 144, 160, 172, 180, 215, 240, 258, 288, 344, 360, 387, 430, 457, 480, 516, 645, 688, 720, 774, 860, 914, 1032, 1290, 1371, 1376, 1440, 1548, 1720, 1828, 1935, 2064, 2285, 2580, 2742, 3096, 3440, 3656, 3870, 4113, 4128, 4570, 5160, 5484, 6192, 6855, 6880, 7312, 7740, 8226, 9140, 10320, 10968, 12384, 13710, 14624, 15480, 16452, 18280, 19651, 20565, 20640, 21936, 27420, 30960, 32904, 36560, 39302, 41130, 43872, 54840, 58953, 61920, 65808, 73120, 78604, 82260, 98255, 109680, 117906, 131616, 157208, 164520, 176859, 196510, 219360, 235812, 294765, 314416, 329040, 353718, 393020, 471624, 589530, 628832, 658080, 707436, 786040, 884295, 943248, 1179060, 1414872, 1572080, 1768590, 1886496, 2358120, 2829744, 3144160, 3537180, 4716240, 5659488, 7074360, 9432480, 14148720, 28297440]

約数ペア:

[(1, 28297440), (2, 14148720), (3, 9432480), (4, 7074360), (5, 5659488), (6, 4716240), (8, 3537180), (9, 3144160), (10, 2829744), (12, 2358120), (15, 1886496), (16, 1768590), (18, 1572080), (20, 1414872), (24, 1179060), (30, 943248), (32, 884295), (36, 786040), (40, 707436), (43, 658080), (45, 628832), (48, 589530), (60, 471624), (72, 393020), (80, 353718), (86, 329040), (90, 314416), (96, 294765), (120, 235812), (129, 219360), (144, 196510), (160, 176859), (172, 164520), (180, 157208), (215, 131616), (240, 117906), (258, 109680), (288, 98255), (344, 82260), (360, 78604), (387, 73120), (430, 65808), (457, 61920), (480, 58953), (516, 54840), (645, 43872), (688, 41130), (720, 39302), (774, 36560), (860, 32904), (914, 30960), (1032, 27420), (1290, 21936), (1371, 20640), (1376, 20565), (1440, 19651), (1548, 18280), (1720, 16452), (1828, 15480), (1935, 14624), (2064, 13710), (2285, 12384), (2580, 10968), (2742, 10320), (3096, 9140), (3440, 8226), (3656, 7740), (3870, 7312), (4113, 6880), (4128, 6855), (4570, 6192), (5160, 5484)]