55790380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 120294720

約数和(自身を除く): 64504340

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 142, 202, 284, 355, 389, 404, 505, 710, 778, 1010, 1420, 1556, 1945, 2020, 3890, 7171, 7780, 14342, 27619, 28684, 35855, 39289, 55238, 71710, 78578, 110476, 138095, 143420, 157156, 196445, 276190, 392890, 552380, 785780, 2789519, 5579038, 11158076, 13947595, 27895190, 55790380]

約数ペア:

[(1, 55790380), (2, 27895190), (4, 13947595), (5, 11158076), (10, 5579038), (20, 2789519), (71, 785780), (101, 552380), (142, 392890), (202, 276190), (284, 196445), (355, 157156), (389, 143420), (404, 138095), (505, 110476), (710, 78578), (778, 71710), (1010, 55238), (1420, 39289), (1556, 35855), (1945, 28684), (2020, 27619), (3890, 14342), (7171, 7780)]