18342520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{601}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 47678400

約数和(自身を除く): 29335880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 436, 545, 601, 763, 872, 1090, 1202, 1526, 2180, 2404, 3005, 3052, 3815, 4207, 4360, 4808, 6010, 6104, 7630, 8414, 12020, 15260, 16828, 21035, 24040, 30520, 33656, 42070, 65509, 84140, 131018, 168280, 262036, 327545, 458563, 524072, 655090, 917126, 1310180, 1834252, 2292815, 2620360, 3668504, 4585630, 9171260, 18342520]

約数ペア:

[(1, 18342520), (2, 9171260), (4, 4585630), (5, 3668504), (7, 2620360), (8, 2292815), (10, 1834252), (14, 1310180), (20, 917126), (28, 655090), (35, 524072), (40, 458563), (56, 327545), (70, 262036), (109, 168280), (140, 131018), (218, 84140), (280, 65509), (436, 42070), (545, 33656), (601, 30520), (763, 24040), (872, 21035), (1090, 16828), (1202, 15260), (1526, 12020), (2180, 8414), (2404, 7630), (3005, 6104), (3052, 6010), (3815, 4808), (4207, 4360)]