81486175

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:843

約数の個数: 24

約数和(自身を含む): 104256720

約数和(自身を除く): 22770545

約数列:

[1, 5, 25, 53, 89, 265, 445, 691, 1325, 2225, 3455, 4717, 17275, 23585, 36623, 61499, 117925, 183115, 307495, 915575, 1537475, 3259447, 16297235, 81486175]

約数ペア:

[(1, 81486175), (5, 16297235), (25, 3259447), (53, 1537475), (89, 915575), (265, 307495), (445, 183115), (691, 117925), (1325, 61499), (2225, 36623), (3455, 23585), (4717, 17275)]