20611899

素因数分解:

$3^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{607}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 37939200

約数和(自身を除く): 17327301

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 343, 441, 539, 607, 693, 1029, 1617, 1821, 3087, 3773, 4249, 4851, 5463, 6677, 11319, 12747, 20031, 29743, 33957, 38241, 46739, 60093, 89229, 140217, 208201, 267687, 327173, 420651, 624603, 981519, 1873809, 2290211, 2944557, 6870633, 20611899]

約数ペア:

[(1, 20611899), (3, 6870633), (7, 2944557), (9, 2290211), (11, 1873809), (21, 981519), (33, 624603), (49, 420651), (63, 327173), (77, 267687), (99, 208201), (147, 140217), (231, 89229), (343, 60093), (441, 46739), (539, 38241), (607, 33957), (693, 29743), (1029, 20031), (1617, 12747), (1821, 11319), (3087, 6677), (3773, 5463), (4249, 4851)]