20726817

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 30007296

約数和(自身を除く): 9280479

約数列:

[1, 3, 31, 43, 71, 73, 93, 129, 213, 219, 1333, 2201, 2263, 3053, 3139, 3999, 5183, 6603, 6789, 9159, 9417, 15549, 94643, 97309, 160673, 222869, 283929, 291927, 482019, 668607, 6908939, 20726817]

約数ペア:

[(1, 20726817), (3, 6908939), (31, 668607), (43, 482019), (71, 291927), (73, 283929), (93, 222869), (129, 160673), (213, 97309), (219, 94643), (1333, 15549), (2201, 9417), (2263, 9159), (3053, 6789), (3139, 6603), (3999, 5183)]