20752020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3719}}^1$

素因数の和:3765

約数の個数: 72

約数和(自身を含む): 64995840

約数和(自身を除く): 44243820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3719, 5580, 7438, 11157, 14876, 18595, 22314, 33471, 37190, 44628, 55785, 66942, 74380, 111570, 115289, 133884, 167355, 223140, 230578, 334710, 345867, 461156, 576445, 669420, 691734, 1037601, 1152890, 1383468, 1729335, 2075202, 2305780, 3458670, 4150404, 5188005, 6917340, 10376010, 20752020]

約数ペア:

[(1, 20752020), (2, 10376010), (3, 6917340), (4, 5188005), (5, 4150404), (6, 3458670), (9, 2305780), (10, 2075202), (12, 1729335), (15, 1383468), (18, 1152890), (20, 1037601), (30, 691734), (31, 669420), (36, 576445), (45, 461156), (60, 345867), (62, 334710), (90, 230578), (93, 223140), (124, 167355), (155, 133884), (180, 115289), (186, 111570), (279, 74380), (310, 66942), (372, 55785), (465, 44628), (558, 37190), (620, 33471), (930, 22314), (1116, 18595), (1395, 14876), (1860, 11157), (2790, 7438), (3719, 5580)]