28066779

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 47017152

約数和(自身を除く): 18950373

約数列:

[1, 3, 9, 13, 17, 39, 51, 103, 117, 137, 153, 221, 309, 411, 663, 927, 1233, 1339, 1751, 1781, 1989, 2329, 4017, 5253, 5343, 6987, 12051, 14111, 15759, 16029, 20961, 22763, 30277, 42333, 68289, 90831, 126999, 183443, 204867, 239887, 272493, 550329, 719661, 1650987, 2158983, 3118531, 9355593, 28066779]

約数ペア:

[(1, 28066779), (3, 9355593), (9, 3118531), (13, 2158983), (17, 1650987), (39, 719661), (51, 550329), (103, 272493), (117, 239887), (137, 204867), (153, 183443), (221, 126999), (309, 90831), (411, 68289), (663, 42333), (927, 30277), (1233, 22763), (1339, 20961), (1751, 16029), (1781, 15759), (1989, 14111), (2329, 12051), (4017, 6987), (5253, 5343)]