20815696420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{661}}^1\times {\mathrm{15287}}^1$

素因数の和:16060

約数の個数: 48

約数和(自身を含む): 44207025408

約数和(自身を除く): 23391328988

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 661, 1030, 1322, 2060, 2644, 3305, 6610, 13220, 15287, 30574, 61148, 68083, 76435, 136166, 152870, 272332, 305740, 340415, 680830, 1361660, 1574561, 3149122, 6298244, 7872805, 10104707, 15745610, 20209414, 31491220, 40418828, 50523535, 101047070, 202094140, 1040784821, 2081569642, 4163139284, 5203924105, 10407848210, 20815696420]

約数ペア:

[(1, 20815696420), (2, 10407848210), (4, 5203924105), (5, 4163139284), (10, 2081569642), (20, 1040784821), (103, 202094140), (206, 101047070), (412, 50523535), (515, 40418828), (661, 31491220), (1030, 20209414), (1322, 15745610), (2060, 10104707), (2644, 7872805), (3305, 6298244), (6610, 3149122), (13220, 1574561), (15287, 1361660), (30574, 680830), (61148, 340415), (68083, 305740), (76435, 272332), (136166, 152870)]