21249018

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{168643}}^1$

素因数の和:168658

約数の個数: 24

約数和(自身を含む): 52616928

約数和(自身を除く): 31367910

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 168643, 337286, 505929, 1011858, 1180501, 1517787, 2361002, 3035574, 3541503, 7083006, 10624509, 21249018]

約数ペア:

[(1, 21249018), (2, 10624509), (3, 7083006), (6, 3541503), (7, 3035574), (9, 2361002), (14, 1517787), (18, 1180501), (21, 1011858), (42, 505929), (63, 337286), (126, 168643)]