891089420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{110557}}^1$

素因数の和:110610

約数の個数: 48

約数和(自身を含む): 2080259328

約数和(自身を除く): 1189169908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 110557, 221114, 442228, 552785, 1105570, 1437241, 2211140, 2874482, 3427267, 5748964, 6854534, 7186205, 13709068, 14372410, 17136335, 28744820, 34272670, 44554471, 68545340, 89108942, 178217884, 222772355, 445544710, 891089420]

約数ペア:

[(1, 891089420), (2, 445544710), (4, 222772355), (5, 178217884), (10, 89108942), (13, 68545340), (20, 44554471), (26, 34272670), (31, 28744820), (52, 17136335), (62, 14372410), (65, 13709068), (124, 7186205), (130, 6854534), (155, 5748964), (260, 3427267), (310, 2874482), (403, 2211140), (620, 1437241), (806, 1105570), (1612, 552785), (2015, 442228), (4030, 221114), (8060, 110557)]