21605040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:867

約数の個数: 120

約数和(自身を含む): 74609808

約数和(自身を除く): 53004768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 111, 120, 144, 148, 180, 185, 222, 240, 296, 333, 360, 370, 444, 555, 592, 666, 720, 740, 811, 888, 1110, 1332, 1480, 1622, 1665, 1776, 2220, 2433, 2664, 2960, 3244, 3330, 4055, 4440, 4866, 5328, 6488, 6660, 7299, 8110, 8880, 9732, 12165, 12976, 13320, 14598, 16220, 19464, 24330, 26640, 29196, 30007, 32440, 36495, 38928, 48660, 58392, 60014, 64880, 72990, 90021, 97320, 116784, 120028, 145980, 150035, 180042, 194640, 240056, 270063, 291960, 300070, 360084, 450105, 480112, 540126, 583920, 600140, 720168, 900210, 1080252, 1200280, 1350315, 1440336, 1800420, 2160504, 2400560, 2700630, 3600840, 4321008, 5401260, 7201680, 10802520, 21605040]

約数ペア:

[(1, 21605040), (2, 10802520), (3, 7201680), (4, 5401260), (5, 4321008), (6, 3600840), (8, 2700630), (9, 2400560), (10, 2160504), (12, 1800420), (15, 1440336), (16, 1350315), (18, 1200280), (20, 1080252), (24, 900210), (30, 720168), (36, 600140), (37, 583920), (40, 540126), (45, 480112), (48, 450105), (60, 360084), (72, 300070), (74, 291960), (80, 270063), (90, 240056), (111, 194640), (120, 180042), (144, 150035), (148, 145980), (180, 120028), (185, 116784), (222, 97320), (240, 90021), (296, 72990), (333, 64880), (360, 60014), (370, 58392), (444, 48660), (555, 38928), (592, 36495), (666, 32440), (720, 30007), (740, 29196), (811, 26640), (888, 24330), (1110, 19464), (1332, 16220), (1480, 14598), (1622, 13320), (1665, 12976), (1776, 12165), (2220, 9732), (2433, 8880), (2664, 8110), (2960, 7299), (3244, 6660), (3330, 6488), (4055, 5328), (4440, 4866)]