257431215

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1\times {\mathrm{1009}}^1$

素因数の和:1323

約数の個数: 32

約数和(自身を含む): 419739840

約数和(自身を除く): 162308625

約数列:

[1, 3, 5, 15, 73, 219, 233, 365, 699, 1009, 1095, 1165, 3027, 3495, 5045, 15135, 17009, 51027, 73657, 85045, 220971, 235097, 255135, 368285, 705291, 1104855, 1175485, 3526455, 17162081, 51486243, 85810405, 257431215]

約数ペア:

[(1, 257431215), (3, 85810405), (5, 51486243), (15, 17162081), (73, 3526455), (219, 1175485), (233, 1104855), (365, 705291), (699, 368285), (1009, 255135), (1095, 235097), (1165, 220971), (3027, 85045), (3495, 73657), (5045, 51027), (15135, 17009)]