21000279692

素因数分解:

$2^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{643}}^1\times {\mathrm{2657}}^1$

素因数の和:3750

約数の個数: 48

約数和(自身を含む): 42177569280

約数和(自身を除く): 21177289588

約数列:

[1, 2, 4, 7, 14, 28, 439, 643, 878, 1286, 1756, 2572, 2657, 3073, 4501, 5314, 6146, 9002, 10628, 12292, 18004, 18599, 37198, 74396, 282277, 564554, 1129108, 1166423, 1708451, 1975939, 2332846, 3416902, 3951878, 4665692, 6833804, 7903756, 8164961, 11959157, 16329922, 23918314, 32659844, 47836628, 750009989, 1500019978, 3000039956, 5250069923, 10500139846, 21000279692]

約数ペア:

[(1, 21000279692), (2, 10500139846), (4, 5250069923), (7, 3000039956), (14, 1500019978), (28, 750009989), (439, 47836628), (643, 32659844), (878, 23918314), (1286, 16329922), (1756, 11959157), (2572, 8164961), (2657, 7903756), (3073, 6833804), (4501, 4665692), (5314, 3951878), (6146, 3416902), (9002, 2332846), (10628, 1975939), (12292, 1708451), (18004, 1166423), (18599, 1129108), (37198, 564554), (74396, 282277)]