21811460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{9013}}^1$

素因数の和:9044

約数の個数: 36

約数和(自身を含む): 50352204

約数和(自身を除く): 28540744

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 9013, 18026, 36052, 45065, 90130, 99143, 180260, 198286, 396572, 495715, 991430, 1090573, 1982860, 2181146, 4362292, 5452865, 10905730, 21811460]

約数ペア:

[(1, 21811460), (2, 10905730), (4, 5452865), (5, 4362292), (10, 2181146), (11, 1982860), (20, 1090573), (22, 991430), (44, 495715), (55, 396572), (110, 198286), (121, 180260), (220, 99143), (242, 90130), (484, 45065), (605, 36052), (1210, 18026), (2420, 9013)]