31121288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 68584320

約数和(自身を除く): 37463032

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 71, 88, 136, 142, 187, 284, 293, 374, 568, 586, 748, 781, 1172, 1207, 1496, 1562, 2344, 2414, 3124, 3223, 4828, 4981, 6248, 6446, 9656, 9962, 12892, 13277, 19924, 20803, 25784, 26554, 39848, 41606, 53108, 54791, 83212, 106216, 109582, 166424, 219164, 228833, 353651, 438328, 457666, 707302, 915332, 1414604, 1830664, 2829208, 3890161, 7780322, 15560644, 31121288]

約数ペア:

[(1, 31121288), (2, 15560644), (4, 7780322), (8, 3890161), (11, 2829208), (17, 1830664), (22, 1414604), (34, 915332), (44, 707302), (68, 457666), (71, 438328), (88, 353651), (136, 228833), (142, 219164), (187, 166424), (284, 109582), (293, 106216), (374, 83212), (568, 54791), (586, 53108), (748, 41606), (781, 39848), (1172, 26554), (1207, 25784), (1496, 20803), (1562, 19924), (2344, 13277), (2414, 12892), (3124, 9962), (3223, 9656), (4828, 6446), (4981, 6248)]