21225430

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3301}}^1$

素因数の和:3951

約数の個数: 16

約数和(自身を含む): 38276784

約数和(自身を除く): 17051354

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 3301, 6430, 6602, 16505, 33010, 2122543, 4245086, 10612715, 21225430]

約数ペア:

[(1, 21225430), (2, 10612715), (5, 4245086), (10, 2122543), (643, 33010), (1286, 16505), (3215, 6602), (3301, 6430)]