15721797

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 27706560

約数和(自身を除く): 11984763

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 433, 637, 741, 931, 1299, 1729, 1911, 2793, 3031, 5187, 5629, 8227, 9093, 12103, 16887, 21217, 24681, 36309, 39403, 57589, 63651, 106951, 118209, 172767, 275821, 320853, 403123, 748657, 827463, 1209369, 2245971, 5240599, 15721797]

約数ペア:

[(1, 15721797), (3, 5240599), (7, 2245971), (13, 1209369), (19, 827463), (21, 748657), (39, 403123), (49, 320853), (57, 275821), (91, 172767), (133, 118209), (147, 106951), (247, 63651), (273, 57589), (399, 39403), (433, 36309), (637, 24681), (741, 21217), (931, 16887), (1299, 12103), (1729, 9093), (1911, 8227), (2793, 5629), (3031, 5187)]