28540985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 38997504

約数和(自身を除く): 10456519

約数列:

[1, 5, 11, 47, 55, 61, 181, 235, 305, 517, 671, 905, 1991, 2585, 2867, 3355, 8507, 9955, 11041, 14335, 31537, 42535, 55205, 93577, 121451, 157685, 467885, 518927, 607255, 2594635, 5708197, 28540985]

約数ペア:

[(1, 28540985), (5, 5708197), (11, 2594635), (47, 607255), (55, 518927), (61, 467885), (181, 157685), (235, 121451), (305, 93577), (517, 55205), (671, 42535), (905, 31537), (1991, 14335), (2585, 11041), (2867, 9955), (3355, 8507)]