21708687

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7229}}^1$

素因数の和:7263

約数の個数: 32

約数和(自身を含む): 38868480

約数和(自身を除く): 17159793

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 7229, 21687, 50603, 79519, 93977, 151809, 238557, 281931, 556633, 657839, 1033747, 1669899, 1973517, 3101241, 7236229, 21708687]

約数ペア:

[(1, 21708687), (3, 7236229), (7, 3101241), (11, 1973517), (13, 1669899), (21, 1033747), (33, 657839), (39, 556633), (77, 281931), (91, 238557), (143, 151809), (231, 93977), (273, 79519), (429, 50603), (1001, 21687), (3003, 7229)]