20413218

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 28247262

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 89, 127, 129, 178, 254, 258, 267, 301, 381, 534, 602, 623, 762, 889, 903, 1246, 1778, 1806, 1869, 2667, 3738, 3827, 5334, 5461, 7654, 10922, 11303, 11481, 16383, 22606, 22962, 26789, 32766, 33909, 38227, 53578, 67818, 76454, 79121, 80367, 114681, 158242, 160734, 229362, 237363, 474726, 486029, 972058, 1458087, 2916174, 3402203, 6804406, 10206609, 20413218]

約数ペア:

[(1, 20413218), (2, 10206609), (3, 6804406), (6, 3402203), (7, 2916174), (14, 1458087), (21, 972058), (42, 486029), (43, 474726), (86, 237363), (89, 229362), (127, 160734), (129, 158242), (178, 114681), (254, 80367), (258, 79121), (267, 76454), (301, 67818), (381, 53578), (534, 38227), (602, 33909), (623, 32766), (762, 26789), (889, 22962), (903, 22606), (1246, 16383), (1778, 11481), (1806, 11303), (1869, 10922), (2667, 7654), (3738, 5461), (3827, 5334)]