20905165347

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1\times {\mathrm{16453}}^1$

素因数の和:16883

約数の個数: 32

約数和(自身を含む): 30738704640

約数和(自身を除く): 9833539293

約数列:

[1, 3, 11, 33, 139, 277, 417, 831, 1529, 3047, 4587, 9141, 16453, 38503, 49359, 115509, 180983, 423533, 542949, 1270599, 2286967, 4557481, 6860901, 13672443, 25156637, 50132291, 75469911, 150396873, 633489859, 1900469577, 6968388449, 20905165347]

約数ペア:

[(1, 20905165347), (3, 6968388449), (11, 1900469577), (33, 633489859), (139, 150396873), (277, 75469911), (417, 50132291), (831, 25156637), (1529, 13672443), (3047, 6860901), (4587, 4557481), (9141, 2286967), (16453, 1270599), (38503, 542949), (49359, 423533), (115509, 180983)]