18854568

素因数分解:

$2^3\times 3^2\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 51480000

約数和(自身を除く): 32625432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 131, 262, 393, 524, 786, 1048, 1179, 1572, 1999, 2358, 3144, 3998, 4716, 5997, 7996, 9432, 11994, 15992, 17991, 23988, 35982, 47976, 71964, 143928, 261869, 523738, 785607, 1047476, 1571214, 2094952, 2356821, 3142428, 4713642, 6284856, 9427284, 18854568]

約数ペア:

[(1, 18854568), (2, 9427284), (3, 6284856), (4, 4713642), (6, 3142428), (8, 2356821), (9, 2094952), (12, 1571214), (18, 1047476), (24, 785607), (36, 523738), (72, 261869), (131, 143928), (262, 71964), (393, 47976), (524, 35982), (786, 23988), (1048, 17991), (1179, 15992), (1572, 11994), (1999, 9432), (2358, 7996), (3144, 5997), (3998, 4716)]