20196885

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 33441408

約数和(自身を除く): 13244523

約数列:

[1, 3, 5, 15, 43, 129, 173, 181, 215, 519, 543, 645, 865, 905, 2595, 2715, 7439, 7783, 22317, 23349, 31313, 37195, 38915, 93939, 111585, 116745, 156565, 469695, 1346459, 4039377, 6732295, 20196885]

約数ペア:

[(1, 20196885), (3, 6732295), (5, 4039377), (15, 1346459), (43, 469695), (129, 156565), (173, 116745), (181, 111585), (215, 93939), (519, 38915), (543, 37195), (645, 31313), (865, 23349), (905, 22317), (2595, 7783), (2715, 7439)]