28861855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 11573345

約数列:

[1, 5, 11, 19, 55, 71, 95, 209, 355, 389, 781, 1045, 1349, 1945, 3905, 4279, 6745, 7391, 14839, 21395, 27619, 36955, 74195, 81301, 138095, 303809, 406505, 524761, 1519045, 2623805, 5772371, 28861855]

約数ペア:

[(1, 28861855), (5, 5772371), (11, 2623805), (19, 1519045), (55, 524761), (71, 406505), (95, 303809), (209, 138095), (355, 81301), (389, 74195), (781, 36955), (1045, 27619), (1349, 21395), (1945, 14839), (3905, 7391), (4279, 6745)]