20349621875

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{4519}}^1$

素因数の和:4686

約数の個数: 48

約数和(自身を含む): 27965710080

約数和(自身を除く): 7616088205

約数列:

[1, 5, 11, 25, 55, 125, 131, 275, 625, 655, 1375, 1441, 3125, 3275, 4519, 6875, 7205, 16375, 22595, 34375, 36025, 49709, 81875, 112975, 180125, 248545, 409375, 564875, 591989, 900625, 1242725, 2824375, 2959945, 4503125, 6213625, 6511879, 14121875, 14799725, 31068125, 32559395, 73998625, 155340625, 162796975, 369993125, 813984875, 1849965625, 4069924375, 20349621875]

約数ペア:

[(1, 20349621875), (5, 4069924375), (11, 1849965625), (25, 813984875), (55, 369993125), (125, 162796975), (131, 155340625), (275, 73998625), (625, 32559395), (655, 31068125), (1375, 14799725), (1441, 14121875), (3125, 6511879), (3275, 6213625), (4519, 4503125), (6875, 2959945), (7205, 2824375), (16375, 1242725), (22595, 900625), (34375, 591989), (36025, 564875), (49709, 409375), (81875, 248545), (112975, 180125)]