12820940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{577}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 29713824

約数和(自身を除く): 16892884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 577, 1010, 1111, 1154, 2020, 2222, 2308, 2885, 4444, 5555, 5770, 6347, 11110, 11540, 12694, 22220, 25388, 31735, 58277, 63470, 116554, 126940, 233108, 291385, 582770, 641047, 1165540, 1282094, 2564188, 3205235, 6410470, 12820940]

約数ペア:

[(1, 12820940), (2, 6410470), (4, 3205235), (5, 2564188), (10, 1282094), (11, 1165540), (20, 641047), (22, 582770), (44, 291385), (55, 233108), (101, 126940), (110, 116554), (202, 63470), (220, 58277), (404, 31735), (505, 25388), (577, 22220), (1010, 12694), (1111, 11540), (1154, 11110), (2020, 6347), (2222, 5770), (2308, 5555), (2885, 4444)]