31237880

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^2$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 71872920

約数和(自身を除く): 40635040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 97, 166, 194, 332, 388, 415, 485, 664, 776, 830, 970, 1660, 1940, 3320, 3880, 8051, 9409, 16102, 18818, 32204, 37636, 40255, 47045, 64408, 75272, 80510, 94090, 161020, 188180, 322040, 376360, 780947, 1561894, 3123788, 3904735, 6247576, 7809470, 15618940, 31237880]

約数ペア:

[(1, 31237880), (2, 15618940), (4, 7809470), (5, 6247576), (8, 3904735), (10, 3123788), (20, 1561894), (40, 780947), (83, 376360), (97, 322040), (166, 188180), (194, 161020), (332, 94090), (388, 80510), (415, 75272), (485, 64408), (664, 47045), (776, 40255), (830, 37636), (970, 32204), (1660, 18818), (1940, 16102), (3320, 9409), (3880, 8051)]