1666640

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 3937248

約数和(自身を除く): 2270608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 251, 332, 415, 502, 664, 830, 1004, 1255, 1328, 1660, 2008, 2510, 3320, 4016, 5020, 6640, 10040, 20080, 20833, 41666, 83332, 104165, 166664, 208330, 333328, 416660, 833320, 1666640]

約数ペア:

[(1, 1666640), (2, 833320), (4, 416660), (5, 333328), (8, 208330), (10, 166664), (16, 104165), (20, 83332), (40, 41666), (80, 20833), (83, 20080), (166, 10040), (251, 6640), (332, 5020), (415, 4016), (502, 3320), (664, 2510), (830, 2008), (1004, 1660), (1255, 1328)]