20147895

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15439}}^1$

素因数の和:15479

約数の個数: 24

約数和(自身を含む): 36129600

約数和(自身を除く): 15981705

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15439, 46317, 77195, 138951, 231585, 447731, 694755, 1343193, 2238655, 4029579, 6715965, 20147895]

約数ペア:

[(1, 20147895), (3, 6715965), (5, 4029579), (9, 2238655), (15, 1343193), (29, 694755), (45, 447731), (87, 231585), (145, 138951), (261, 77195), (435, 46317), (1305, 15439)]