21241283

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 24975360

約数和(自身を除く): 3734077

約数列:

[1, 7, 71, 79, 497, 541, 553, 3787, 5609, 38411, 39263, 42739, 268877, 299173, 3034469, 21241283]

約数ペア:

[(1, 21241283), (7, 3034469), (71, 299173), (79, 268877), (497, 42739), (541, 39263), (553, 38411), (3787, 5609)]