15678720

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{1361}}^1$

素因数の和:1388

約数の個数: 108

約数和(自身を含む): 54286596

約数和(自身を除く): 38607876

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 576, 640, 720, 768, 960, 1152, 1280, 1361, 1440, 1920, 2304, 2722, 2880, 3840, 4083, 5444, 5760, 6805, 8166, 10888, 11520, 12249, 13610, 16332, 20415, 21776, 24498, 27220, 32664, 40830, 43552, 48996, 54440, 61245, 65328, 81660, 87104, 97992, 108880, 122490, 130656, 163320, 174208, 195984, 217760, 244980, 261312, 326640, 348416, 391968, 435520, 489960, 522624, 653280, 783936, 871040, 979920, 1045248, 1306560, 1567872, 1742080, 1959840, 2613120, 3135744, 3919680, 5226240, 7839360, 15678720]

約数ペア:

[(1, 15678720), (2, 7839360), (3, 5226240), (4, 3919680), (5, 3135744), (6, 2613120), (8, 1959840), (9, 1742080), (10, 1567872), (12, 1306560), (15, 1045248), (16, 979920), (18, 871040), (20, 783936), (24, 653280), (30, 522624), (32, 489960), (36, 435520), (40, 391968), (45, 348416), (48, 326640), (60, 261312), (64, 244980), (72, 217760), (80, 195984), (90, 174208), (96, 163320), (120, 130656), (128, 122490), (144, 108880), (160, 97992), (180, 87104), (192, 81660), (240, 65328), (256, 61245), (288, 54440), (320, 48996), (360, 43552), (384, 40830), (480, 32664), (576, 27220), (640, 24498), (720, 21776), (768, 20415), (960, 16332), (1152, 13610), (1280, 12249), (1361, 11520), (1440, 10888), (1920, 8166), (2304, 6805), (2722, 5760), (2880, 5444), (3840, 4083)]