20430956

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{41}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 46329696

約数和(自身を除く): 25898740

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 41, 52, 74, 82, 91, 148, 164, 182, 259, 287, 364, 481, 518, 533, 574, 962, 1036, 1066, 1148, 1369, 1517, 1924, 2132, 2738, 3034, 3367, 3731, 5476, 6068, 6734, 7462, 9583, 10619, 13468, 14924, 17797, 19166, 19721, 21238, 35594, 38332, 39442, 42476, 56129, 71188, 78884, 112258, 124579, 138047, 224516, 249158, 276094, 392903, 498316, 552188, 729677, 785806, 1459354, 1571612, 2918708, 5107739, 10215478, 20430956]

約数ペア:

[(1, 20430956), (2, 10215478), (4, 5107739), (7, 2918708), (13, 1571612), (14, 1459354), (26, 785806), (28, 729677), (37, 552188), (41, 498316), (52, 392903), (74, 276094), (82, 249158), (91, 224516), (148, 138047), (164, 124579), (182, 112258), (259, 78884), (287, 71188), (364, 56129), (481, 42476), (518, 39442), (533, 38332), (574, 35594), (962, 21238), (1036, 19721), (1066, 19166), (1148, 17797), (1369, 14924), (1517, 13468), (1924, 10619), (2132, 9583), (2738, 7462), (3034, 6734), (3367, 6068), (3731, 5476)]