20154186819

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{561101}}^1$

素因数の和:561427

約数の個数: 24

約数和(自身を含む): 31453133712

約数和(自身を除く): 11298946893

約数列:

[1, 3, 9, 13, 39, 117, 307, 921, 2763, 3991, 11973, 35919, 561101, 1683303, 5049909, 7294313, 21882939, 65648817, 172258007, 516774021, 1550322063, 2239354091, 6718062273, 20154186819]

約数ペア:

[(1, 20154186819), (3, 6718062273), (9, 2239354091), (13, 1550322063), (39, 516774021), (117, 172258007), (307, 65648817), (921, 21882939), (2763, 7294313), (3991, 5049909), (11973, 1683303), (35919, 561101)]