20210571440

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{911}}^1\times {\mathrm{4139}}^1$

素因数の和:5130

約数の個数: 80

約数和(自身を含む): 47754800640

約数和(自身を除く): 27544229200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 911, 1072, 1340, 1822, 2680, 3644, 4139, 4555, 5360, 7288, 8278, 9110, 14576, 16556, 18220, 20695, 33112, 36440, 41390, 61037, 66224, 72880, 82780, 122074, 165560, 244148, 277313, 305185, 331120, 488296, 554626, 610370, 976592, 1109252, 1220740, 1386565, 2218504, 2441480, 2773130, 3770629, 4437008, 4882960, 5546260, 7541258, 11092520, 15082516, 18853145, 22185040, 30165032, 37706290, 60330064, 75412580, 150825160, 252632143, 301650320, 505264286, 1010528572, 1263160715, 2021057144, 2526321430, 4042114288, 5052642860, 10105285720, 20210571440]

約数ペア:

[(1, 20210571440), (2, 10105285720), (4, 5052642860), (5, 4042114288), (8, 2526321430), (10, 2021057144), (16, 1263160715), (20, 1010528572), (40, 505264286), (67, 301650320), (80, 252632143), (134, 150825160), (268, 75412580), (335, 60330064), (536, 37706290), (670, 30165032), (911, 22185040), (1072, 18853145), (1340, 15082516), (1822, 11092520), (2680, 7541258), (3644, 5546260), (4139, 4882960), (4555, 4437008), (5360, 3770629), (7288, 2773130), (8278, 2441480), (9110, 2218504), (14576, 1386565), (16556, 1220740), (18220, 1109252), (20695, 976592), (33112, 610370), (36440, 554626), (41390, 488296), (61037, 331120), (66224, 305185), (72880, 277313), (82780, 244148), (122074, 165560)]