20454364

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1321}}^1$

素因数の和:1418

約数の個数: 36

約数和(自身を含む): 42198240

約数和(自身を除く): 21743876

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 1106, 1321, 2212, 2642, 3871, 5284, 7742, 9247, 15484, 18494, 36988, 64729, 104359, 129458, 208718, 258916, 417436, 730513, 1461026, 2922052, 5113591, 10227182, 20454364]

約数ペア:

[(1, 20454364), (2, 10227182), (4, 5113591), (7, 2922052), (14, 1461026), (28, 730513), (49, 417436), (79, 258916), (98, 208718), (158, 129458), (196, 104359), (316, 64729), (553, 36988), (1106, 18494), (1321, 15484), (2212, 9247), (2642, 7742), (3871, 5284)]