21945147

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61471}}^1$

素因数の和:61498

約数の個数: 16

約数和(自身を含む): 35407872

約数和(自身を除く): 13462725

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 61471, 184413, 430297, 1045007, 1290891, 3135021, 7315049, 21945147]

約数ペア:

[(1, 21945147), (3, 7315049), (7, 3135021), (17, 1290891), (21, 1045007), (51, 430297), (119, 184413), (357, 61471)]