1639745

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:256

約数の個数: 16

約数和(自身を含む): 2073600

約数和(自身を除く): 433855

約数列:

[1, 5, 31, 71, 149, 155, 355, 745, 2201, 4619, 10579, 11005, 23095, 52895, 327949, 1639745]

約数ペア:

[(1, 1639745), (5, 327949), (31, 52895), (71, 23095), (149, 11005), (155, 10579), (355, 4619), (745, 2201)]