21343160

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31387}}^1$

素因数の和:31415

約数の個数: 32

約数和(自身を含む): 50848560

約数和(自身を除く): 29505400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31387, 62774, 125548, 156935, 251096, 313870, 533579, 627740, 1067158, 1255480, 2134316, 2667895, 4268632, 5335790, 10671580, 21343160]

約数ペア:

[(1, 21343160), (2, 10671580), (4, 5335790), (5, 4268632), (8, 2667895), (10, 2134316), (17, 1255480), (20, 1067158), (34, 627740), (40, 533579), (68, 313870), (85, 251096), (136, 156935), (170, 125548), (340, 62774), (680, 31387)]