81778844

素因数分解:

$2^2\times 7^2\times {\mathrm{417239}}^1$

素因数の和:417257

約数の個数: 18

約数和(自身を含む): 166478760

約数和(自身を除く): 84699916

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 417239, 834478, 1668956, 2920673, 5841346, 11682692, 20444711, 40889422, 81778844]

約数ペア:

[(1, 81778844), (2, 40889422), (4, 20444711), (7, 11682692), (14, 5841346), (28, 2920673), (49, 1668956), (98, 834478), (196, 417239)]