21258777

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10259943

約数列:

[1, 3, 19, 31, 53, 57, 93, 159, 227, 589, 681, 1007, 1643, 1767, 3021, 4313, 4929, 7037, 12031, 12939, 21111, 31217, 36093, 93651, 133703, 228589, 372961, 401109, 685767, 1118883, 7086259, 21258777]

約数ペア:

[(1, 21258777), (3, 7086259), (19, 1118883), (31, 685767), (53, 401109), (57, 372961), (93, 228589), (159, 133703), (227, 93651), (589, 36093), (681, 31217), (1007, 21111), (1643, 12939), (1767, 12031), (3021, 7037), (4313, 4929)]