221480245

素因数分解:

$5^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 326708640

約数和(自身を除く): 105228395

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 343, 665, 931, 971, 1715, 2401, 4655, 4855, 6517, 6797, 12005, 18449, 32585, 33985, 45619, 47579, 92245, 129143, 228095, 237895, 333053, 645715, 904001, 1665265, 2331371, 4520005, 6328007, 11656855, 31640035, 44296049, 221480245]

約数ペア:

[(1, 221480245), (5, 44296049), (7, 31640035), (19, 11656855), (35, 6328007), (49, 4520005), (95, 2331371), (133, 1665265), (245, 904001), (343, 645715), (665, 333053), (931, 237895), (971, 228095), (1715, 129143), (2401, 92245), (4655, 47579), (4855, 45619), (6517, 33985), (6797, 32585), (12005, 18449)]