31415728

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{115499}}^1$

素因数の和:115524

約数の個数: 20

約数和(自身を含む): 64449000

約数和(自身を除く): 33033272

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 115499, 230998, 461996, 923992, 1847984, 1963483, 3926966, 7853932, 15707864, 31415728]

約数ペア:

[(1, 31415728), (2, 15707864), (4, 7853932), (8, 3926966), (16, 1963483), (17, 1847984), (34, 923992), (68, 461996), (136, 230998), (272, 115499)]