199923957

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:447

約数の個数: 40

約数和(自身を含む): 305888000

約数和(自身を除く): 105964043

約数列:

[1, 3, 9, 27, 79, 81, 157, 199, 237, 471, 597, 711, 1413, 1791, 2133, 4239, 5373, 6399, 12403, 12717, 15721, 16119, 31243, 37209, 47163, 93729, 111627, 141489, 281187, 334881, 424467, 843561, 1004643, 1273401, 2468197, 2530683, 7404591, 22213773, 66641319, 199923957]

約数ペア:

[(1, 199923957), (3, 66641319), (9, 22213773), (27, 7404591), (79, 2530683), (81, 2468197), (157, 1273401), (199, 1004643), (237, 843561), (471, 424467), (597, 334881), (711, 281187), (1413, 141489), (1791, 111627), (2133, 93729), (4239, 47163), (5373, 37209), (6399, 31243), (12403, 16119), (12717, 15721)]