28406133

素因数分解:

$3^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:464

約数の個数: 60

約数和(自身を含む): 52389612

約数和(自身を除く): 23983479

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 81, 119, 147, 153, 189, 357, 421, 441, 459, 567, 833, 1071, 1263, 1323, 1377, 2499, 2947, 3213, 3789, 3969, 7157, 7497, 8841, 9639, 11367, 20629, 21471, 22491, 26523, 34101, 50099, 61887, 64413, 67473, 79569, 150297, 185661, 193239, 238707, 350693, 450891, 556983, 579717, 1052079, 1352673, 1670949, 3156237, 4058019, 9468711, 28406133]

約数ペア:

[(1, 28406133), (3, 9468711), (7, 4058019), (9, 3156237), (17, 1670949), (21, 1352673), (27, 1052079), (49, 579717), (51, 556983), (63, 450891), (81, 350693), (119, 238707), (147, 193239), (153, 185661), (189, 150297), (357, 79569), (421, 67473), (441, 64413), (459, 61887), (567, 50099), (833, 34101), (1071, 26523), (1263, 22491), (1323, 21471), (1377, 20629), (2499, 11367), (2947, 9639), (3213, 8841), (3789, 7497), (3969, 7157)]