85820808980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^2\times {\mathrm{401}}^1\times {\mathrm{1049}}^1$

素因数の和:1661

約数の個数: 72

約数和(自身を含む): 182653644600

約数和(自身を除く): 96832835620

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 401, 404, 505, 802, 1010, 1049, 1604, 2005, 2020, 2098, 4010, 4196, 5245, 8020, 10201, 10490, 20402, 20980, 40501, 40804, 51005, 81002, 102010, 105949, 162004, 202505, 204020, 211898, 405010, 420649, 423796, 529745, 810020, 841298, 1059490, 1682596, 2103245, 2118980, 4090601, 4206490, 8181202, 8412980, 10700849, 16362404, 20453005, 21401698, 40906010, 42485549, 42803396, 53504245, 81812020, 84971098, 107008490, 169942196, 212427745, 214016980, 424855490, 849710980, 4291040449, 8582080898, 17164161796, 21455202245, 42910404490, 85820808980]

約数ペア:

[(1, 85820808980), (2, 42910404490), (4, 21455202245), (5, 17164161796), (10, 8582080898), (20, 4291040449), (101, 849710980), (202, 424855490), (401, 214016980), (404, 212427745), (505, 169942196), (802, 107008490), (1010, 84971098), (1049, 81812020), (1604, 53504245), (2005, 42803396), (2020, 42485549), (2098, 40906010), (4010, 21401698), (4196, 20453005), (5245, 16362404), (8020, 10700849), (10201, 8412980), (10490, 8181202), (20402, 4206490), (20980, 4090601), (40501, 2118980), (40804, 2103245), (51005, 1682596), (81002, 1059490), (102010, 841298), (105949, 810020), (162004, 529745), (202505, 423796), (204020, 420649), (211898, 405010)]