20781378

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{601}}^1$

素因数の和:739

約数の個数: 48

約数和(自身を含む): 48176856

約数和(自身を除く): 27395478

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 113, 153, 226, 306, 339, 601, 678, 1017, 1202, 1803, 1921, 2034, 3606, 3842, 5409, 5763, 10217, 10818, 11526, 17289, 20434, 30651, 34578, 61302, 67913, 91953, 135826, 183906, 203739, 407478, 611217, 1154521, 1222434, 2309042, 3463563, 6927126, 10390689, 20781378]

約数ペア:

[(1, 20781378), (2, 10390689), (3, 6927126), (6, 3463563), (9, 2309042), (17, 1222434), (18, 1154521), (34, 611217), (51, 407478), (102, 203739), (113, 183906), (153, 135826), (226, 91953), (306, 67913), (339, 61302), (601, 34578), (678, 30651), (1017, 20434), (1202, 17289), (1803, 11526), (1921, 10818), (2034, 10217), (3606, 5763), (3842, 5409)]