20851956

素因数分解:

$2^2\times 3^2\times {\mathrm{389}}^1\times {\mathrm{1489}}^1$

素因数の和:1888

約数の個数: 36

約数和(自身を含む): 52880100

約数和(自身を除く): 32028144

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 389, 778, 1167, 1489, 1556, 2334, 2978, 3501, 4467, 4668, 5956, 7002, 8934, 13401, 14004, 17868, 26802, 53604, 579221, 1158442, 1737663, 2316884, 3475326, 5212989, 6950652, 10425978, 20851956]

約数ペア:

[(1, 20851956), (2, 10425978), (3, 6950652), (4, 5212989), (6, 3475326), (9, 2316884), (12, 1737663), (18, 1158442), (36, 579221), (389, 53604), (778, 26802), (1167, 17868), (1489, 14004), (1556, 13401), (2334, 8934), (2978, 7002), (3501, 5956), (4467, 4668)]