28220325

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{1097}}^1$

素因数の和:1131

約数の個数: 48

約数和(自身を含む): 54460800

約数和(自身を除く): 26240475

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 525, 735, 1029, 1097, 1225, 1715, 3291, 3675, 5145, 5485, 7679, 8575, 16455, 23037, 25725, 27425, 38395, 53753, 82275, 115185, 161259, 191975, 268765, 376271, 575925, 806295, 1128813, 1343825, 1881355, 4031475, 5644065, 9406775, 28220325]

約数ペア:

[(1, 28220325), (3, 9406775), (5, 5644065), (7, 4031475), (15, 1881355), (21, 1343825), (25, 1128813), (35, 806295), (49, 575925), (75, 376271), (105, 268765), (147, 191975), (175, 161259), (245, 115185), (343, 82275), (525, 53753), (735, 38395), (1029, 27425), (1097, 25725), (1225, 23037), (1715, 16455), (3291, 8575), (3675, 7679), (5145, 5485)]