21223903

素因数分解:

${\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 22654080

約数和(自身を除く): 1430177

約数列:

[1, 37, 53, 79, 137, 1961, 2923, 4187, 5069, 7261, 10823, 154919, 268657, 400451, 573619, 21223903]

約数ペア:

[(1, 21223903), (37, 573619), (53, 400451), (79, 268657), (137, 154919), (1961, 10823), (2923, 7261), (4187, 5069)]