21512520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19919}}^1$

素因数の和:19939

約数の個数: 64

約数和(自身を含む): 71712000

約数和(自身を除く): 50199480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19919, 39838, 59757, 79676, 99595, 119514, 159352, 179271, 199190, 239028, 298785, 358542, 398380, 478056, 537813, 597570, 717084, 796760, 896355, 1075626, 1195140, 1434168, 1792710, 2151252, 2390280, 2689065, 3585420, 4302504, 5378130, 7170840, 10756260, 21512520]

約数ペア:

[(1, 21512520), (2, 10756260), (3, 7170840), (4, 5378130), (5, 4302504), (6, 3585420), (8, 2689065), (9, 2390280), (10, 2151252), (12, 1792710), (15, 1434168), (18, 1195140), (20, 1075626), (24, 896355), (27, 796760), (30, 717084), (36, 597570), (40, 537813), (45, 478056), (54, 398380), (60, 358542), (72, 298785), (90, 239028), (108, 199190), (120, 179271), (135, 159352), (180, 119514), (216, 99595), (270, 79676), (360, 59757), (540, 39838), (1080, 19919)]