21480214

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{5309}}^1$

素因数の和:5352

約数の個数: 24

約数和(自身を含む): 39124080

約数和(自身を除く): 17643866

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 289, 578, 2023, 4046, 5309, 10618, 37163, 74326, 90253, 180506, 631771, 1263542, 1534301, 3068602, 10740107, 21480214]

約数ペア:

[(1, 21480214), (2, 10740107), (7, 3068602), (14, 1534301), (17, 1263542), (34, 631771), (119, 180506), (238, 90253), (289, 74326), (578, 37163), (2023, 10618), (4046, 5309)]