18989919

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1607}}^1$

素因数の和:1727

約数の個数: 24

約数和(自身を含む): 29850912

約数和(自身を除く): 10860993

約数列:

[1, 3, 9, 13, 39, 101, 117, 303, 909, 1313, 1607, 3939, 4821, 11817, 14463, 20891, 62673, 162307, 188019, 486921, 1460763, 2109991, 6329973, 18989919]

約数ペア:

[(1, 18989919), (3, 6329973), (9, 2109991), (13, 1460763), (39, 486921), (101, 188019), (117, 162307), (303, 62673), (909, 20891), (1313, 14463), (1607, 11817), (3939, 4821)]