21279600

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 180

約数和(自身を含む): 77356656

約数和(自身を除く): 56077056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 25, 30, 36, 40, 45, 46, 48, 50, 60, 69, 72, 75, 80, 90, 92, 100, 115, 120, 138, 144, 150, 180, 184, 200, 207, 225, 230, 240, 257, 276, 300, 345, 360, 368, 400, 414, 450, 460, 514, 552, 575, 600, 690, 720, 771, 828, 900, 920, 1028, 1035, 1104, 1150, 1200, 1285, 1380, 1542, 1656, 1725, 1800, 1840, 2056, 2070, 2300, 2313, 2570, 2760, 3084, 3312, 3450, 3600, 3855, 4112, 4140, 4600, 4626, 5140, 5175, 5520, 5911, 6168, 6425, 6900, 7710, 8280, 9200, 9252, 10280, 10350, 11565, 11822, 12336, 12850, 13800, 15420, 16560, 17733, 18504, 19275, 20560, 20700, 23130, 23644, 25700, 27600, 29555, 30840, 35466, 37008, 38550, 41400, 46260, 47288, 51400, 53199, 57825, 59110, 61680, 70932, 77100, 82800, 88665, 92520, 94576, 102800, 106398, 115650, 118220, 141864, 147775, 154200, 177330, 185040, 212796, 231300, 236440, 265995, 283728, 295550, 308400, 354660, 425592, 443325, 462600, 472880, 531990, 591100, 709320, 851184, 886650, 925200, 1063980, 1182200, 1329975, 1418640, 1773300, 2127960, 2364400, 2659950, 3546600, 4255920, 5319900, 7093200, 10639800, 21279600]

約数ペア:

[(1, 21279600), (2, 10639800), (3, 7093200), (4, 5319900), (5, 4255920), (6, 3546600), (8, 2659950), (9, 2364400), (10, 2127960), (12, 1773300), (15, 1418640), (16, 1329975), (18, 1182200), (20, 1063980), (23, 925200), (24, 886650), (25, 851184), (30, 709320), (36, 591100), (40, 531990), (45, 472880), (46, 462600), (48, 443325), (50, 425592), (60, 354660), (69, 308400), (72, 295550), (75, 283728), (80, 265995), (90, 236440), (92, 231300), (100, 212796), (115, 185040), (120, 177330), (138, 154200), (144, 147775), (150, 141864), (180, 118220), (184, 115650), (200, 106398), (207, 102800), (225, 94576), (230, 92520), (240, 88665), (257, 82800), (276, 77100), (300, 70932), (345, 61680), (360, 59110), (368, 57825), (400, 53199), (414, 51400), (450, 47288), (460, 46260), (514, 41400), (552, 38550), (575, 37008), (600, 35466), (690, 30840), (720, 29555), (771, 27600), (828, 25700), (900, 23644), (920, 23130), (1028, 20700), (1035, 20560), (1104, 19275), (1150, 18504), (1200, 17733), (1285, 16560), (1380, 15420), (1542, 13800), (1656, 12850), (1725, 12336), (1800, 11822), (1840, 11565), (2056, 10350), (2070, 10280), (2300, 9252), (2313, 9200), (2570, 8280), (2760, 7710), (3084, 6900), (3312, 6425), (3450, 6168), (3600, 5911), (3855, 5520), (4112, 5175), (4140, 5140), (4600, 4626)]