28128716

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{337}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 61780992

約数和(自身を除く): 33652276

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 271, 308, 337, 542, 674, 1084, 1348, 1897, 2359, 2981, 3707, 3794, 4718, 5962, 7414, 7588, 9436, 11924, 14828, 20867, 25949, 41734, 51898, 83468, 91327, 103796, 182654, 365308, 639289, 1004597, 1278578, 2009194, 2557156, 4018388, 7032179, 14064358, 28128716]

約数ペア:

[(1, 28128716), (2, 14064358), (4, 7032179), (7, 4018388), (11, 2557156), (14, 2009194), (22, 1278578), (28, 1004597), (44, 639289), (77, 365308), (154, 182654), (271, 103796), (308, 91327), (337, 83468), (542, 51898), (674, 41734), (1084, 25949), (1348, 20867), (1897, 14828), (2359, 11924), (2981, 9436), (3707, 7588), (3794, 7414), (4718, 5962)]