21890970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{243233}}^1$

素因数の和:243246

約数の個数: 24

約数和(自身を含む): 56916756

約数和(自身を除く): 35025786

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 243233, 486466, 729699, 1216165, 1459398, 2189097, 2432330, 3648495, 4378194, 7296990, 10945485, 21890970]

約数ペア:

[(1, 21890970), (2, 10945485), (3, 7296990), (5, 4378194), (6, 3648495), (9, 2432330), (10, 2189097), (15, 1459398), (18, 1216165), (30, 729699), (45, 486466), (90, 243233)]