21201890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124717}}^1$

素因数の和:124741

約数の個数: 16

約数和(自身を含む): 40408632

約数和(自身を除く): 19206742

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124717, 249434, 623585, 1247170, 2120189, 4240378, 10600945, 21201890]

約数ペア:

[(1, 21201890), (2, 10600945), (5, 4240378), (10, 2120189), (17, 1247170), (34, 623585), (85, 249434), (170, 124717)]