638539713

素因数分解:

$3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1\times {\mathrm{331}}^1$

素因数の和:579

約数の個数: 64

約数和(自身を含む): 1109145600

約数和(自身を除く): 470605887

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 173, 177, 189, 331, 413, 519, 531, 993, 1211, 1239, 1557, 1593, 2317, 2979, 3633, 3717, 4671, 6951, 8937, 10207, 10899, 11151, 19529, 20853, 30621, 32697, 57263, 58587, 62559, 71449, 91863, 136703, 171789, 175761, 214347, 275589, 400841, 410109, 515367, 527283, 643041, 1202523, 1230327, 1546101, 1929123, 3378517, 3607569, 3690981, 10135551, 10822707, 23649619, 30406653, 70948857, 91219959, 212846571, 638539713]

約数ペア:

[(1, 638539713), (3, 212846571), (7, 91219959), (9, 70948857), (21, 30406653), (27, 23649619), (59, 10822707), (63, 10135551), (173, 3690981), (177, 3607569), (189, 3378517), (331, 1929123), (413, 1546101), (519, 1230327), (531, 1202523), (993, 643041), (1211, 527283), (1239, 515367), (1557, 410109), (1593, 400841), (2317, 275589), (2979, 214347), (3633, 175761), (3717, 171789), (4671, 136703), (6951, 91863), (8937, 71449), (10207, 62559), (10899, 58587), (11151, 57263), (19529, 32697), (20853, 30621)]