20809216

素因数分解:

$2^9\times {\mathrm{97}}^1\times {\mathrm{419}}^1$

素因数の和:534

約数の個数: 40

約数和(自身を含む): 42106680

約数和(自身を除く): 21297464

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 256, 388, 419, 512, 776, 838, 1552, 1676, 3104, 3352, 6208, 6704, 12416, 13408, 24832, 26816, 40643, 49664, 53632, 81286, 107264, 162572, 214528, 325144, 650288, 1300576, 2601152, 5202304, 10404608, 20809216]

約数ペア:

[(1, 20809216), (2, 10404608), (4, 5202304), (8, 2601152), (16, 1300576), (32, 650288), (64, 325144), (97, 214528), (128, 162572), (194, 107264), (256, 81286), (388, 53632), (419, 49664), (512, 40643), (776, 26816), (838, 24832), (1552, 13408), (1676, 12416), (3104, 6704), (3352, 6208)]