20964564

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{467}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 56216160

約数和(自身を除く): 35251596

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 43, 58, 86, 87, 116, 129, 172, 174, 258, 261, 348, 387, 467, 516, 522, 774, 934, 1044, 1247, 1401, 1548, 1868, 2494, 2802, 3741, 4203, 4988, 5604, 7482, 8406, 11223, 13543, 14964, 16812, 20081, 22446, 27086, 40162, 40629, 44892, 54172, 60243, 80324, 81258, 120486, 121887, 162516, 180729, 240972, 243774, 361458, 487548, 582349, 722916, 1164698, 1747047, 2329396, 3494094, 5241141, 6988188, 10482282, 20964564]

約数ペア:

[(1, 20964564), (2, 10482282), (3, 6988188), (4, 5241141), (6, 3494094), (9, 2329396), (12, 1747047), (18, 1164698), (29, 722916), (36, 582349), (43, 487548), (58, 361458), (86, 243774), (87, 240972), (116, 180729), (129, 162516), (172, 121887), (174, 120486), (258, 81258), (261, 80324), (348, 60243), (387, 54172), (467, 44892), (516, 40629), (522, 40162), (774, 27086), (934, 22446), (1044, 20081), (1247, 16812), (1401, 14964), (1548, 13543), (1868, 11223), (2494, 8406), (2802, 7482), (3741, 5604), (4203, 4988)]