21490305

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 35942400

約数和(自身を除く): 14452095

約数列:

[1, 3, 5, 15, 29, 87, 127, 145, 381, 389, 435, 635, 1167, 1905, 1945, 3683, 5835, 11049, 11281, 18415, 33843, 49403, 55245, 56405, 148209, 169215, 247015, 741045, 1432687, 4298061, 7163435, 21490305]

約数ペア:

[(1, 21490305), (3, 7163435), (5, 4298061), (15, 1432687), (29, 741045), (87, 247015), (127, 169215), (145, 148209), (381, 56405), (389, 55245), (435, 49403), (635, 33843), (1167, 18415), (1905, 11281), (1945, 11049), (3683, 5835)]