207920420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{719}}^1\times {\mathrm{761}}^1$

素因数の和:1508

約数の個数: 48

約数和(自身を含む): 460857600

約数和(自身を除く): 252937180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 719, 761, 1438, 1522, 2876, 3044, 3595, 3805, 7190, 7610, 13661, 14380, 14459, 15220, 27322, 28918, 54644, 57836, 68305, 72295, 136610, 144590, 273220, 289180, 547159, 1094318, 2188636, 2735795, 5471590, 10396021, 10943180, 20792042, 41584084, 51980105, 103960210, 207920420]

約数ペア:

[(1, 207920420), (2, 103960210), (4, 51980105), (5, 41584084), (10, 20792042), (19, 10943180), (20, 10396021), (38, 5471590), (76, 2735795), (95, 2188636), (190, 1094318), (380, 547159), (719, 289180), (761, 273220), (1438, 144590), (1522, 136610), (2876, 72295), (3044, 68305), (3595, 57836), (3805, 54644), (7190, 28918), (7610, 27322), (13661, 15220), (14380, 14459)]