21389460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5021}}^1$

素因数の和:5104

約数の個数: 48

約数和(自身を含む): 60746112

約数和(自身を除く): 39356652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5021, 10042, 15063, 20084, 25105, 30126, 50210, 60252, 75315, 100420, 150630, 301260, 356491, 712982, 1069473, 1425964, 1782455, 2138946, 3564910, 4277892, 5347365, 7129820, 10694730, 21389460]

約数ペア:

[(1, 21389460), (2, 10694730), (3, 7129820), (4, 5347365), (5, 4277892), (6, 3564910), (10, 2138946), (12, 1782455), (15, 1425964), (20, 1069473), (30, 712982), (60, 356491), (71, 301260), (142, 150630), (213, 100420), (284, 75315), (355, 60252), (426, 50210), (710, 30126), (852, 25105), (1065, 20084), (1420, 15063), (2130, 10042), (4260, 5021)]