28211985

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{13339}}^1$

素因数の和:13397

約数の個数: 24

約数和(自身を含む): 49944960

約数和(自身を除く): 21732975

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 13339, 40017, 66695, 120051, 200085, 600255, 626933, 1880799, 3134665, 5642397, 9403995, 28211985]

約数ペア:

[(1, 28211985), (3, 9403995), (5, 5642397), (9, 3134665), (15, 1880799), (45, 626933), (47, 600255), (141, 200085), (235, 120051), (423, 66695), (705, 40017), (2115, 13339)]