21295911

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{78007}}^1$

素因数の和:78030

約数の個数: 16

約数和(自身を含む): 34947584

約数和(自身を除く): 13651673

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 78007, 234021, 546049, 1014091, 1638147, 3042273, 7098637, 21295911]

約数ペア:

[(1, 21295911), (3, 7098637), (7, 3042273), (13, 1638147), (21, 1014091), (39, 546049), (91, 234021), (273, 78007)]