28704951

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:684

約数の個数: 36

約数和(自身を含む): 46710664

約数和(自身を除く): 18005713

約数列:

[1, 3, 9, 11, 33, 43, 99, 121, 129, 363, 387, 473, 613, 1089, 1419, 1839, 4257, 5203, 5517, 6743, 15609, 20229, 26359, 46827, 60687, 74173, 79077, 222519, 237231, 289949, 667557, 869847, 2609541, 3189439, 9568317, 28704951]

約数ペア:

[(1, 28704951), (3, 9568317), (9, 3189439), (11, 2609541), (33, 869847), (43, 667557), (99, 289949), (121, 237231), (129, 222519), (363, 79077), (387, 74173), (473, 60687), (613, 46827), (1089, 26359), (1419, 20229), (1839, 15609), (4257, 6743), (5203, 5517)]