161657960

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{9001}}^1$

素因数の和:9461

約数の個数: 32

約数和(自身を含む): 364581000

約数和(自身を除く): 202923040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 8980, 9001, 17960, 18002, 36004, 45005, 72008, 90010, 180020, 360040, 4041449, 8082898, 16165796, 20207245, 32331592, 40414490, 80828980, 161657960]

約数ペア:

[(1, 161657960), (2, 80828980), (4, 40414490), (5, 32331592), (8, 20207245), (10, 16165796), (20, 8082898), (40, 4041449), (449, 360040), (898, 180020), (1796, 90010), (2245, 72008), (3592, 45005), (4490, 36004), (8980, 18002), (9001, 17960)]