28133725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1249}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 37665000

約数和(自身を除く): 9531275

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 901, 1249, 1325, 4505, 6245, 21233, 22525, 31225, 66197, 106165, 330985, 530825, 1125349, 1654925, 5626745, 28133725]

約数ペア:

[(1, 28133725), (5, 5626745), (17, 1654925), (25, 1125349), (53, 530825), (85, 330985), (265, 106165), (425, 66197), (901, 31225), (1249, 22525), (1325, 21233), (4505, 6245)]