21696521

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12251}}^1$

素因数の和:12292

約数の個数: 16

約数和(自身を含む): 28228608

約数和(自身を除く): 6532087

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12251, 85757, 134761, 281773, 943327, 1972411, 3099503, 21696521]

約数ペア:

[(1, 21696521), (7, 3099503), (11, 1972411), (23, 943327), (77, 281773), (161, 134761), (253, 85757), (1771, 12251)]