31195900

素因数分解:

$2^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2158

約数の個数: 36

約数和(自身を含む): 68160568

約数和(自身を除く): 36964668

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 157, 314, 628, 785, 1570, 1987, 3140, 3925, 3974, 7850, 7948, 9935, 15700, 19870, 39740, 49675, 99350, 198700, 311959, 623918, 1247836, 1559795, 3119590, 6239180, 7798975, 15597950, 31195900]

約数ペア:

[(1, 31195900), (2, 15597950), (4, 7798975), (5, 6239180), (10, 3119590), (20, 1559795), (25, 1247836), (50, 623918), (100, 311959), (157, 198700), (314, 99350), (628, 49675), (785, 39740), (1570, 19870), (1987, 15700), (3140, 9935), (3925, 7948), (3974, 7850)]