20170809

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 31287680

約数和(自身を除く): 11116871

約数列:

[1, 3, 9, 27, 37, 61, 111, 183, 331, 333, 549, 993, 999, 1647, 2257, 2979, 6771, 8937, 12247, 20191, 20313, 36741, 60573, 60939, 110223, 181719, 330669, 545157, 747067, 2241201, 6723603, 20170809]

約数ペア:

[(1, 20170809), (3, 6723603), (9, 2241201), (27, 747067), (37, 545157), (61, 330669), (111, 181719), (183, 110223), (331, 60939), (333, 60573), (549, 36741), (993, 20313), (999, 20191), (1647, 12247), (2257, 8937), (2979, 6771)]