20478060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3923}}^1$

素因数の和:3967

約数の個数: 72

約数和(自身を含む): 64275120

約数和(自身を除く): 43797060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 3923, 5220, 7846, 11769, 15692, 19615, 23538, 35307, 39230, 47076, 58845, 70614, 78460, 113767, 117690, 141228, 176535, 227534, 235380, 341301, 353070, 455068, 568835, 682602, 706140, 1023903, 1137670, 1365204, 1706505, 2047806, 2275340, 3413010, 4095612, 5119515, 6826020, 10239030, 20478060]

約数ペア:

[(1, 20478060), (2, 10239030), (3, 6826020), (4, 5119515), (5, 4095612), (6, 3413010), (9, 2275340), (10, 2047806), (12, 1706505), (15, 1365204), (18, 1137670), (20, 1023903), (29, 706140), (30, 682602), (36, 568835), (45, 455068), (58, 353070), (60, 341301), (87, 235380), (90, 227534), (116, 176535), (145, 141228), (174, 117690), (180, 113767), (261, 78460), (290, 70614), (348, 58845), (435, 47076), (522, 39230), (580, 35307), (870, 23538), (1044, 19615), (1305, 15692), (1740, 11769), (2610, 7846), (3923, 5220)]