21051325

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1181}}^1$

素因数の和:1245

約数の個数: 24

約数和(自身を含む): 28141056

約数和(自身を除く): 7089731

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1181, 3565, 5905, 17825, 27163, 29525, 36611, 135815, 183055, 679075, 842053, 915275, 4210265, 21051325]

約数ペア:

[(1, 21051325), (5, 4210265), (23, 915275), (25, 842053), (31, 679075), (115, 183055), (155, 135815), (575, 36611), (713, 29525), (775, 27163), (1181, 17825), (3565, 5905)]