28720175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{577}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 39132912

約数和(自身を除く): 10412737

約数列:

[1, 5, 11, 25, 55, 181, 275, 577, 905, 1991, 2885, 4525, 6347, 9955, 14425, 31735, 49775, 104437, 158675, 522185, 1148807, 2610925, 5744035, 28720175]

約数ペア:

[(1, 28720175), (5, 5744035), (11, 2610925), (25, 1148807), (55, 522185), (181, 158675), (275, 104437), (577, 49775), (905, 31735), (1991, 14425), (2885, 9955), (4525, 6347)]