27878225

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{3089}}^1$

素因数の和:3137

約数の個数: 18

約数和(自身を含む): 36495990

約数和(自身を除く): 8617765

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 3089, 9025, 15445, 58691, 77225, 293455, 1115129, 1467275, 5575645, 27878225]

約数ペア:

[(1, 27878225), (5, 5575645), (19, 1467275), (25, 1115129), (95, 293455), (361, 77225), (475, 58691), (1805, 15445), (3089, 9025)]