20689116

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3469}}^1$

素因数の和:3554

約数の個数: 48

約数和(自身を含む): 55964160

約数和(自身を除く): 35275044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3469, 5964, 6938, 10407, 13876, 20814, 24283, 41628, 48566, 72849, 97132, 145698, 246299, 291396, 492598, 738897, 985196, 1477794, 1724093, 2955588, 3448186, 5172279, 6896372, 10344558, 20689116]

約数ペア:

[(1, 20689116), (2, 10344558), (3, 6896372), (4, 5172279), (6, 3448186), (7, 2955588), (12, 1724093), (14, 1477794), (21, 985196), (28, 738897), (42, 492598), (71, 291396), (84, 246299), (142, 145698), (213, 97132), (284, 72849), (426, 48566), (497, 41628), (852, 24283), (994, 20814), (1491, 13876), (1988, 10407), (2982, 6938), (3469, 5964)]