20925740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8647}}^1$

素因数の和:8678

約数の個数: 36

約数和(自身を含む): 48307728

約数和(自身を除く): 27381988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8647, 17294, 34588, 43235, 86470, 95117, 172940, 190234, 380468, 475585, 951170, 1046287, 1902340, 2092574, 4185148, 5231435, 10462870, 20925740]

約数ペア:

[(1, 20925740), (2, 10462870), (4, 5231435), (5, 4185148), (10, 2092574), (11, 1902340), (20, 1046287), (22, 951170), (44, 475585), (55, 380468), (110, 190234), (121, 172940), (220, 95117), (242, 86470), (484, 43235), (605, 34588), (1210, 17294), (2420, 8647)]