17918720

素因数分解:

$2^8\times 5^1\times {\mathrm{13999}}^1$

素因数の和:14020

約数の個数: 36

約数和(自身を含む): 42924000

約数和(自身を除く): 25005280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 13999, 27998, 55996, 69995, 111992, 139990, 223984, 279980, 447968, 559960, 895936, 1119920, 1791872, 2239840, 3583744, 4479680, 8959360, 17918720]

約数ペア:

[(1, 17918720), (2, 8959360), (4, 4479680), (5, 3583744), (8, 2239840), (10, 1791872), (16, 1119920), (20, 895936), (32, 559960), (40, 447968), (64, 279980), (80, 223984), (128, 139990), (160, 111992), (256, 69995), (320, 55996), (640, 27998), (1280, 13999)]