21069938

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1261

約数の個数: 16

約数和(自身を含む): 32396760

約数和(自身を除く): 11326822

約数列:

[1, 2, 53, 106, 197, 394, 1009, 2018, 10441, 20882, 53477, 106954, 198773, 397546, 10534969, 21069938]

約数ペア:

[(1, 21069938), (2, 10534969), (53, 397546), (106, 198773), (197, 106954), (394, 53477), (1009, 20882), (2018, 10441)]