21384385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{22871}}^1$

素因数の和:22904

約数の個数: 16

約数和(自身を含む): 29642112

約数和(自身を除く): 8257727

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 22871, 114355, 251581, 388807, 1257905, 1944035, 4276877, 21384385]

約数ペア:

[(1, 21384385), (5, 4276877), (11, 1944035), (17, 1257905), (55, 388807), (85, 251581), (187, 114355), (935, 22871)]