21409406

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{2719}}^1$

素因数の和:2879

約数の個数: 16

約数和(自身を含む): 33423360

約数和(自身を除く): 12013954

約数列:

[1, 2, 31, 62, 127, 254, 2719, 3937, 5438, 7874, 84289, 168578, 345313, 690626, 10704703, 21409406]

約数ペア:

[(1, 21409406), (2, 10704703), (31, 690626), (62, 345313), (127, 168578), (254, 84289), (2719, 7874), (3937, 5438)]