7976980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{359}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 18506880

約数和(自身を除く): 10529900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 359, 404, 505, 718, 1010, 1111, 1436, 1795, 2020, 2222, 3590, 3949, 4444, 5555, 7180, 7898, 11110, 15796, 19745, 22220, 36259, 39490, 72518, 78980, 145036, 181295, 362590, 398849, 725180, 797698, 1595396, 1994245, 3988490, 7976980]

約数ペア:

[(1, 7976980), (2, 3988490), (4, 1994245), (5, 1595396), (10, 797698), (11, 725180), (20, 398849), (22, 362590), (44, 181295), (55, 145036), (101, 78980), (110, 72518), (202, 39490), (220, 36259), (359, 22220), (404, 19745), (505, 15796), (718, 11110), (1010, 7898), (1111, 7180), (1436, 5555), (1795, 4444), (2020, 3949), (2222, 3590)]