28938890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{40759}}^1$

素因数の和:40837

約数の個数: 16

約数和(自身を含む): 52824960

約数和(自身を除く): 23886070

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 40759, 81518, 203795, 407590, 2893889, 5787778, 14469445, 28938890]

約数ペア:

[(1, 28938890), (2, 14469445), (5, 5787778), (10, 2893889), (71, 407590), (142, 203795), (355, 81518), (710, 40759)]