28420713

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 45592800

約数和(自身を除く): 17172087

約数列:

[1, 3, 9, 19, 27, 57, 59, 81, 171, 177, 313, 513, 531, 939, 1121, 1539, 1593, 2817, 3363, 4779, 5947, 8451, 10089, 17841, 18467, 25353, 30267, 53523, 55401, 90801, 160569, 166203, 350873, 481707, 498609, 1052619, 1495827, 3157857, 9473571, 28420713]

約数ペア:

[(1, 28420713), (3, 9473571), (9, 3157857), (19, 1495827), (27, 1052619), (57, 498609), (59, 481707), (81, 350873), (171, 166203), (177, 160569), (313, 90801), (513, 55401), (531, 53523), (939, 30267), (1121, 25353), (1539, 18467), (1593, 17841), (2817, 10089), (3363, 8451), (4779, 5947)]