18401680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1901}}^1$

素因数の和:1936

約数の個数: 60

約数和(自身を含む): 47051676

約数和(自身を除く): 28649996

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1901, 1936, 2420, 3802, 4840, 7604, 9505, 9680, 15208, 19010, 20911, 30416, 38020, 41822, 76040, 83644, 104555, 152080, 167288, 209110, 230021, 334576, 418220, 460042, 836440, 920084, 1150105, 1672880, 1840168, 2300210, 3680336, 4600420, 9200840, 18401680]

約数ペア:

[(1, 18401680), (2, 9200840), (4, 4600420), (5, 3680336), (8, 2300210), (10, 1840168), (11, 1672880), (16, 1150105), (20, 920084), (22, 836440), (40, 460042), (44, 418220), (55, 334576), (80, 230021), (88, 209110), (110, 167288), (121, 152080), (176, 104555), (220, 83644), (242, 76040), (440, 41822), (484, 38020), (605, 30416), (880, 20911), (968, 19010), (1210, 15208), (1901, 9680), (1936, 9505), (2420, 7604), (3802, 4840)]