21400518

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{209809}}^1$

素因数の和:209831

約数の個数: 16

約数和(自身を含む): 45318960

約数和(自身を除く): 23918442

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 209809, 419618, 629427, 1258854, 3566753, 7133506, 10700259, 21400518]

約数ペア:

[(1, 21400518), (2, 10700259), (3, 7133506), (6, 3566753), (17, 1258854), (34, 629427), (51, 419618), (102, 209809)]