31489400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1993}}^1$

素因数の和:2088

約数の個数: 48

約数和(自身を含む): 74176800

約数和(自身を除く): 42687400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 1993, 3160, 3950, 3986, 7900, 7972, 9965, 15800, 15944, 19930, 39860, 49825, 79720, 99650, 157447, 199300, 314894, 398600, 629788, 787235, 1259576, 1574470, 3148940, 3936175, 6297880, 7872350, 15744700, 31489400]

約数ペア:

[(1, 31489400), (2, 15744700), (4, 7872350), (5, 6297880), (8, 3936175), (10, 3148940), (20, 1574470), (25, 1259576), (40, 787235), (50, 629788), (79, 398600), (100, 314894), (158, 199300), (200, 157447), (316, 99650), (395, 79720), (632, 49825), (790, 39860), (1580, 19930), (1975, 15944), (1993, 15800), (3160, 9965), (3950, 7972), (3986, 7900)]