21342685

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6701}}^1$

素因数の和:6733

約数の個数: 24

約数和(自身を含む): 32089176

約数和(自身を除く): 10746491

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6701, 33505, 46907, 87113, 234535, 328349, 435565, 609791, 1641745, 3048955, 4268537, 21342685]

約数ペア:

[(1, 21342685), (5, 4268537), (7, 3048955), (13, 1641745), (35, 609791), (49, 435565), (65, 328349), (91, 234535), (245, 87113), (455, 46907), (637, 33505), (3185, 6701)]