20495013

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{307}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 36309504

約数和(自身を除く): 15814491

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 289, 307, 357, 561, 867, 921, 1309, 2023, 2149, 3179, 3377, 3927, 5219, 6069, 6447, 9537, 10131, 15657, 22253, 23639, 36533, 57409, 66759, 70917, 88723, 109599, 172227, 266169, 401863, 621061, 975953, 1205589, 1863183, 2927859, 6831671, 20495013]

約数ペア:

[(1, 20495013), (3, 6831671), (7, 2927859), (11, 1863183), (17, 1205589), (21, 975953), (33, 621061), (51, 401863), (77, 266169), (119, 172227), (187, 109599), (231, 88723), (289, 70917), (307, 66759), (357, 57409), (561, 36533), (867, 23639), (921, 22253), (1309, 15657), (2023, 10131), (2149, 9537), (3179, 6447), (3377, 6069), (3927, 5219)]