20301380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8389}}^1$

素因数の和:8420

約数の個数: 36

約数和(自身を含む): 46866540

約数和(自身を除く): 26565160

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8389, 16778, 33556, 41945, 83890, 92279, 167780, 184558, 369116, 461395, 922790, 1015069, 1845580, 2030138, 4060276, 5075345, 10150690, 20301380]

約数ペア:

[(1, 20301380), (2, 10150690), (4, 5075345), (5, 4060276), (10, 2030138), (11, 1845580), (20, 1015069), (22, 922790), (44, 461395), (55, 369116), (110, 184558), (121, 167780), (220, 92279), (242, 83890), (484, 41945), (605, 33556), (1210, 16778), (2420, 8389)]