18560720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12211}}^1$

素因数の和:12243

約数の個数: 40

約数和(自身を含む): 45428640

約数和(自身を除く): 26867920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12211, 24422, 48844, 61055, 97688, 122110, 195376, 232009, 244220, 464018, 488440, 928036, 976880, 1160045, 1856072, 2320090, 3712144, 4640180, 9280360, 18560720]

約数ペア:

[(1, 18560720), (2, 9280360), (4, 4640180), (5, 3712144), (8, 2320090), (10, 1856072), (16, 1160045), (19, 976880), (20, 928036), (38, 488440), (40, 464018), (76, 244220), (80, 232009), (95, 195376), (152, 122110), (190, 97688), (304, 61055), (380, 48844), (760, 24422), (1520, 12211)]