18860680

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4861}}^1$

素因数の和:4969

約数の個数: 32

約数和(自身を含む): 42882840

約数和(自身を除く): 24022160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4861, 9722, 19444, 24305, 38888, 48610, 97220, 194440, 471517, 943034, 1886068, 2357585, 3772136, 4715170, 9430340, 18860680]

約数ペア:

[(1, 18860680), (2, 9430340), (4, 4715170), (5, 3772136), (8, 2357585), (10, 1886068), (20, 943034), (40, 471517), (97, 194440), (194, 97220), (388, 48610), (485, 38888), (776, 24305), (970, 19444), (1940, 9722), (3880, 4861)]