20765121921

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1\times {\mathrm{719}}^1$

素因数の和:1318

約数の個数: 48

約数和(自身を含む): 30845318400

約数和(自身を除く): 10080196479

約数列:

[1, 3, 9, 59, 137, 177, 397, 411, 531, 719, 1191, 1233, 2157, 3573, 6471, 8083, 23423, 24249, 42421, 54389, 70269, 72747, 98503, 127263, 163167, 210807, 285443, 295509, 381789, 489501, 856329, 886527, 2568987, 3208951, 5811677, 9626853, 16841137, 17435031, 28880559, 39105691, 50523411, 52305093, 117317073, 151570233, 351951219, 2307235769, 6921707307, 20765121921]

約数ペア:

[(1, 20765121921), (3, 6921707307), (9, 2307235769), (59, 351951219), (137, 151570233), (177, 117317073), (397, 52305093), (411, 50523411), (531, 39105691), (719, 28880559), (1191, 17435031), (1233, 16841137), (2157, 9626853), (3573, 5811677), (6471, 3208951), (8083, 2568987), (23423, 886527), (24249, 856329), (42421, 489501), (54389, 381789), (70269, 295509), (72747, 285443), (98503, 210807), (127263, 163167)]