20899810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{347}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 39839040

約数和(自身を除く): 18939230

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 317, 347, 634, 694, 1585, 1735, 3170, 3470, 6023, 6593, 12046, 13186, 30115, 32965, 60230, 65930, 109999, 219998, 549995, 1099990, 2089981, 4179962, 10449905, 20899810]

約数ペア:

[(1, 20899810), (2, 10449905), (5, 4179962), (10, 2089981), (19, 1099990), (38, 549995), (95, 219998), (190, 109999), (317, 65930), (347, 60230), (634, 32965), (694, 30115), (1585, 13186), (1735, 12046), (3170, 6593), (3470, 6023)]