28384785

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 58384872

約数和(自身を除く): 30000087

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 121, 143, 165, 195, 363, 401, 429, 495, 585, 605, 715, 1089, 1203, 1287, 1573, 1815, 2005, 2145, 3609, 4411, 4719, 5213, 5445, 6015, 6435, 7865, 13233, 14157, 15639, 18045, 22055, 23595, 26065, 39699, 46917, 48521, 57343, 66165, 70785, 78195, 145563, 172029, 198495, 234585, 242605, 286715, 436689, 516087, 630773, 727815, 860145, 1892319, 2183445, 2580435, 3153865, 5676957, 9461595, 28384785]

約数ペア:

[(1, 28384785), (3, 9461595), (5, 5676957), (9, 3153865), (11, 2580435), (13, 2183445), (15, 1892319), (33, 860145), (39, 727815), (45, 630773), (55, 516087), (65, 436689), (99, 286715), (117, 242605), (121, 234585), (143, 198495), (165, 172029), (195, 145563), (363, 78195), (401, 70785), (429, 66165), (495, 57343), (585, 48521), (605, 46917), (715, 39699), (1089, 26065), (1203, 23595), (1287, 22055), (1573, 18045), (1815, 15639), (2005, 14157), (2145, 13233), (3609, 7865), (4411, 6435), (4719, 6015), (5213, 5445)]