21407825

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1201}}^1$

素因数の和:1265

約数の個数: 24

約数和(自身を含む): 28617216

約数和(自身を除く): 7209391

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1201, 3565, 6005, 17825, 27623, 30025, 37231, 138115, 186155, 690575, 856313, 930775, 4281565, 21407825]

約数ペア:

[(1, 21407825), (5, 4281565), (23, 930775), (25, 856313), (31, 690575), (115, 186155), (155, 138115), (575, 37231), (713, 30025), (775, 27623), (1201, 17825), (3565, 6005)]