20751356

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:686

約数の個数: 36

約数和(自身を含む): 39971400

約数和(自身を除く): 19220044

約数列:

[1, 2, 4, 17, 29, 34, 58, 68, 116, 289, 493, 578, 619, 986, 1156, 1238, 1972, 2476, 8381, 10523, 16762, 17951, 21046, 33524, 35902, 42092, 71804, 178891, 305167, 357782, 610334, 715564, 1220668, 5187839, 10375678, 20751356]

約数ペア:

[(1, 20751356), (2, 10375678), (4, 5187839), (17, 1220668), (29, 715564), (34, 610334), (58, 357782), (68, 305167), (116, 178891), (289, 71804), (493, 42092), (578, 35902), (619, 33524), (986, 21046), (1156, 17951), (1238, 16762), (1972, 10523), (2476, 8381)]