2019394780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:1019

約数の個数: 96

約数和(自身を含む): 4670507520

約数和(自身を除く): 2651112740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 139, 142, 260, 278, 284, 355, 556, 695, 710, 787, 923, 1390, 1420, 1574, 1807, 1846, 2780, 3148, 3614, 3692, 3935, 4615, 7228, 7870, 9035, 9230, 9869, 10231, 15740, 18070, 18460, 19738, 20462, 36140, 39476, 40924, 49345, 51155, 55877, 98690, 102310, 109393, 111754, 128297, 197380, 204620, 218786, 223508, 256594, 279385, 437572, 513188, 546965, 558770, 641485, 726401, 1093930, 1117540, 1282970, 1422109, 1452802, 2187860, 2565940, 2844218, 2905604, 3632005, 5688436, 7110545, 7264010, 7766903, 14221090, 14528020, 15533806, 28442180, 31067612, 38834515, 77669030, 100969739, 155338060, 201939478, 403878956, 504848695, 1009697390, 2019394780]

約数ペア:

[(1, 2019394780), (2, 1009697390), (4, 504848695), (5, 403878956), (10, 201939478), (13, 155338060), (20, 100969739), (26, 77669030), (52, 38834515), (65, 31067612), (71, 28442180), (130, 15533806), (139, 14528020), (142, 14221090), (260, 7766903), (278, 7264010), (284, 7110545), (355, 5688436), (556, 3632005), (695, 2905604), (710, 2844218), (787, 2565940), (923, 2187860), (1390, 1452802), (1420, 1422109), (1574, 1282970), (1807, 1117540), (1846, 1093930), (2780, 726401), (3148, 641485), (3614, 558770), (3692, 546965), (3935, 513188), (4615, 437572), (7228, 279385), (7870, 256594), (9035, 223508), (9230, 218786), (9869, 204620), (10231, 197380), (15740, 128297), (18070, 111754), (18460, 109393), (19738, 102310), (20462, 98690), (36140, 55877), (39476, 51155), (40924, 49345)]