28771281

素因数分解:

$3^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{659}}^1$

素因数の和:696

約数の個数: 60

約数和(自身を含む): 54624240

約数和(自身を除く): 25852959

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 81, 99, 147, 189, 231, 297, 441, 539, 567, 659, 693, 891, 1323, 1617, 1977, 2079, 3969, 4613, 4851, 5931, 6237, 7249, 13839, 14553, 17793, 21747, 32291, 41517, 43659, 50743, 53379, 65241, 96873, 124551, 152229, 195723, 290619, 355201, 373653, 456687, 587169, 871857, 1065603, 1370061, 2615571, 3196809, 4110183, 9590427, 28771281]

約数ペア:

[(1, 28771281), (3, 9590427), (7, 4110183), (9, 3196809), (11, 2615571), (21, 1370061), (27, 1065603), (33, 871857), (49, 587169), (63, 456687), (77, 373653), (81, 355201), (99, 290619), (147, 195723), (189, 152229), (231, 124551), (297, 96873), (441, 65241), (539, 53379), (567, 50743), (659, 43659), (693, 41517), (891, 32291), (1323, 21747), (1617, 17793), (1977, 14553), (2079, 13839), (3969, 7249), (4613, 6237), (4851, 5931)]