19966821

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{30671}}^1$

素因数の和:30712

約数の個数: 16

約数和(自身を含む): 31408128

約数和(自身を除く): 11441307

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 30671, 92013, 214697, 644091, 950801, 2852403, 6655607, 19966821]

約数ペア:

[(1, 19966821), (3, 6655607), (7, 2852403), (21, 950801), (31, 644091), (93, 214697), (217, 92013), (651, 30671)]