21179994

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:515

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 29001126

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 43, 51, 66, 86, 102, 129, 187, 258, 374, 439, 473, 561, 731, 878, 946, 1122, 1317, 1419, 1462, 2193, 2634, 2838, 4386, 4829, 7463, 8041, 9658, 14487, 14926, 16082, 18877, 22389, 24123, 28974, 37754, 44778, 48246, 56631, 82093, 113262, 164186, 207647, 246279, 320909, 415294, 492558, 622941, 641818, 962727, 1245882, 1925454, 3529999, 7059998, 10589997, 21179994]

約数ペア:

[(1, 21179994), (2, 10589997), (3, 7059998), (6, 3529999), (11, 1925454), (17, 1245882), (22, 962727), (33, 641818), (34, 622941), (43, 492558), (51, 415294), (66, 320909), (86, 246279), (102, 207647), (129, 164186), (187, 113262), (258, 82093), (374, 56631), (439, 48246), (473, 44778), (561, 37754), (731, 28974), (878, 24123), (946, 22389), (1122, 18877), (1317, 16082), (1419, 14926), (1462, 14487), (2193, 9658), (2634, 8041), (2838, 7463), (4386, 4829)]