638492045440

素因数分解:

$2^7\times 5^1\times {\mathrm{4051}}^1\times {\mathrm{246271}}^1$

素因数の和:250341

約数の個数: 64

約数和(自身を含む): 1526778040320

約数和(自身を除く): 888285994880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 4051, 8102, 16204, 20255, 32408, 40510, 64816, 81020, 129632, 162040, 246271, 259264, 324080, 492542, 518528, 648160, 985084, 1231355, 1296320, 1970168, 2462710, 2592640, 3940336, 4925420, 7880672, 9850840, 15761344, 19701680, 31522688, 39403360, 78806720, 157613440, 997643821, 1995287642, 3990575284, 4988219105, 7981150568, 9976438210, 15962301136, 19952876420, 31924602272, 39905752840, 63849204544, 79811505680, 127698409088, 159623011360, 319246022720, 638492045440]

約数ペア:

[(1, 638492045440), (2, 319246022720), (4, 159623011360), (5, 127698409088), (8, 79811505680), (10, 63849204544), (16, 39905752840), (20, 31924602272), (32, 19952876420), (40, 15962301136), (64, 9976438210), (80, 7981150568), (128, 4988219105), (160, 3990575284), (320, 1995287642), (640, 997643821), (4051, 157613440), (8102, 78806720), (16204, 39403360), (20255, 31522688), (32408, 19701680), (40510, 15761344), (64816, 9850840), (81020, 7880672), (129632, 4925420), (162040, 3940336), (246271, 2592640), (259264, 2462710), (324080, 1970168), (492542, 1296320), (518528, 1231355), (648160, 985084)]