28291185

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{353}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 53346384

約数和(自身を除く): 25055199

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 137, 195, 353, 411, 585, 685, 1059, 1233, 1765, 1781, 2055, 3177, 4589, 5295, 5343, 6165, 8905, 13767, 15885, 16029, 22945, 26715, 41301, 48361, 68835, 80145, 145083, 206505, 241805, 435249, 628693, 725415, 1886079, 2176245, 3143465, 5658237, 9430395, 28291185]

約数ペア:

[(1, 28291185), (3, 9430395), (5, 5658237), (9, 3143465), (13, 2176245), (15, 1886079), (39, 725415), (45, 628693), (65, 435249), (117, 241805), (137, 206505), (195, 145083), (353, 80145), (411, 68835), (585, 48361), (685, 41301), (1059, 26715), (1233, 22945), (1765, 16029), (1781, 15885), (2055, 13767), (3177, 8905), (4589, 6165), (5295, 5343)]