28545905

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{421}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 35002368

約数和(自身を除く): 6456463

約数列:

[1, 5, 71, 191, 355, 421, 955, 2105, 13561, 29891, 67805, 80411, 149455, 402055, 5709181, 28545905]

約数ペア:

[(1, 28545905), (5, 5709181), (71, 402055), (191, 149455), (355, 80411), (421, 67805), (955, 29891), (2105, 13561)]