20495619

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 32071680

約数和(自身を除く): 11576061

約数列:

[1, 3, 9, 27, 31, 47, 93, 141, 279, 423, 521, 837, 1269, 1457, 1563, 4371, 4689, 13113, 14067, 16151, 24487, 39339, 48453, 73461, 145359, 220383, 436077, 661149, 759097, 2277291, 6831873, 20495619]

約数ペア:

[(1, 20495619), (3, 6831873), (9, 2277291), (27, 759097), (31, 661149), (47, 436077), (93, 220383), (141, 145359), (279, 73461), (423, 48453), (521, 39339), (837, 24487), (1269, 16151), (1457, 14067), (1563, 13113), (4371, 4689)]