81295851

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2239}}^1$

素因数の和:2288

約数の個数: 48

約数和(自身を含む): 143001600

約数和(自身を除く): 61705749

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 637, 741, 931, 1729, 1911, 2239, 2793, 5187, 6717, 12103, 15673, 29107, 36309, 42541, 47019, 87321, 109711, 127623, 203749, 297787, 329133, 553033, 611247, 893361, 1426243, 1659099, 2084509, 3871231, 4278729, 6253527, 11613693, 27098617, 81295851]

約数ペア:

[(1, 81295851), (3, 27098617), (7, 11613693), (13, 6253527), (19, 4278729), (21, 3871231), (39, 2084509), (49, 1659099), (57, 1426243), (91, 893361), (133, 611247), (147, 553033), (247, 329133), (273, 297787), (399, 203749), (637, 127623), (741, 109711), (931, 87321), (1729, 47019), (1911, 42541), (2239, 36309), (2793, 29107), (5187, 15673), (6717, 12103)]