71857960

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4001}}^1$

素因数の和:4461

約数の個数: 32

約数和(自身を含む): 162081000

約数和(自身を除く): 90223040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4001, 4490, 8002, 8980, 16004, 17960, 20005, 32008, 40010, 80020, 160040, 1796449, 3592898, 7185796, 8982245, 14371592, 17964490, 35928980, 71857960]

約数ペア:

[(1, 71857960), (2, 35928980), (4, 17964490), (5, 14371592), (8, 8982245), (10, 7185796), (20, 3592898), (40, 1796449), (449, 160040), (898, 80020), (1796, 40010), (2245, 32008), (3592, 20005), (4001, 17960), (4490, 16004), (8002, 8980)]