20718460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1783}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 50351616

約数和(自身を除く): 29633156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1783, 2324, 2905, 3566, 5810, 7132, 8915, 11620, 12481, 17830, 24962, 35660, 49924, 62405, 124810, 147989, 249620, 295978, 591956, 739945, 1035923, 1479890, 2071846, 2959780, 4143692, 5179615, 10359230, 20718460]

約数ペア:

[(1, 20718460), (2, 10359230), (4, 5179615), (5, 4143692), (7, 2959780), (10, 2071846), (14, 1479890), (20, 1035923), (28, 739945), (35, 591956), (70, 295978), (83, 249620), (140, 147989), (166, 124810), (332, 62405), (415, 49924), (581, 35660), (830, 24962), (1162, 17830), (1660, 12481), (1783, 11620), (2324, 8915), (2905, 7132), (3566, 5810)]