21253722

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{787}}^1$

素因数の和:1442

約数の個数: 32

約数和(自身を含む): 48717312

約数和(自身を除く): 27463590

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 643, 787, 1286, 1574, 1929, 2361, 3858, 4501, 4722, 5509, 9002, 11018, 13503, 16527, 27006, 33054, 506041, 1012082, 1518123, 3036246, 3542287, 7084574, 10626861, 21253722]

約数ペア:

[(1, 21253722), (2, 10626861), (3, 7084574), (6, 3542287), (7, 3036246), (14, 1518123), (21, 1012082), (42, 506041), (643, 33054), (787, 27006), (1286, 16527), (1574, 13503), (1929, 11018), (2361, 9002), (3858, 5509), (4501, 4722)]