21315745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{9013}}^1$

素因数の和:9072

約数の個数: 16

約数和(自身を含む): 28556352

約数和(自身を除く): 7240607

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 9013, 45065, 99143, 387559, 495715, 1937795, 4263149, 21315745]

約数ペア:

[(1, 21315745), (5, 4263149), (11, 1937795), (43, 495715), (55, 387559), (215, 99143), (473, 45065), (2365, 9013)]