18864489

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 10811031

約数列:

[1, 3, 7, 21, 79, 83, 137, 237, 249, 411, 553, 581, 959, 1659, 1743, 2877, 6557, 10823, 11371, 19671, 32469, 34113, 45899, 75761, 79597, 137697, 227283, 238791, 898309, 2694927, 6288163, 18864489]

約数ペア:

[(1, 18864489), (3, 6288163), (7, 2694927), (21, 898309), (79, 238791), (83, 227283), (137, 137697), (237, 79597), (249, 75761), (411, 45899), (553, 34113), (581, 32469), (959, 19671), (1659, 11371), (1743, 10823), (2877, 6557)]