21405414

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{209857}}^1$

素因数の和:209879

約数の個数: 16

約数和(自身を含む): 45329328

約数和(自身を除く): 23923914

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 209857, 419714, 629571, 1259142, 3567569, 7135138, 10702707, 21405414]

約数ペア:

[(1, 21405414), (2, 10702707), (3, 7135138), (6, 3567569), (17, 1259142), (34, 629571), (51, 419714), (102, 209857)]