18486440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:762

約数の個数: 64

約数和(自身を含む): 48072960

約数和(自身を除く): 29586520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 641, 721, 824, 1030, 1282, 1442, 2060, 2564, 2884, 3205, 3605, 4120, 4487, 5128, 5768, 6410, 7210, 8974, 12820, 14420, 17948, 22435, 25640, 28840, 35896, 44870, 66023, 89740, 132046, 179480, 264092, 330115, 462161, 528184, 660230, 924322, 1320460, 1848644, 2310805, 2640920, 3697288, 4621610, 9243220, 18486440]

約数ペア:

[(1, 18486440), (2, 9243220), (4, 4621610), (5, 3697288), (7, 2640920), (8, 2310805), (10, 1848644), (14, 1320460), (20, 924322), (28, 660230), (35, 528184), (40, 462161), (56, 330115), (70, 264092), (103, 179480), (140, 132046), (206, 89740), (280, 66023), (412, 44870), (515, 35896), (641, 28840), (721, 25640), (824, 22435), (1030, 17948), (1282, 14420), (1442, 12820), (2060, 8974), (2564, 7210), (2884, 6410), (3205, 5768), (3605, 5128), (4120, 4487)]