20858838

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:210

約数の個数: 128

約数和(自身を含む): 58834944

約数和(自身を除く): 37976106

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 23, 26, 33, 39, 42, 46, 66, 69, 77, 78, 91, 138, 143, 151, 154, 161, 182, 231, 253, 273, 286, 299, 302, 322, 429, 453, 462, 483, 506, 546, 598, 759, 858, 897, 906, 966, 1001, 1057, 1518, 1661, 1771, 1794, 1963, 2002, 2093, 2114, 3003, 3171, 3289, 3322, 3473, 3542, 3926, 4186, 4983, 5313, 5889, 6006, 6279, 6342, 6578, 6946, 9867, 9966, 10419, 10626, 11627, 11778, 12558, 13741, 19734, 20838, 21593, 23023, 23254, 24311, 27482, 34881, 38203, 41223, 43186, 45149, 46046, 48622, 64779, 69069, 69762, 72933, 76406, 82446, 90298, 114609, 129558, 135447, 138138, 145866, 151151, 229218, 267421, 270894, 302302, 316043, 453453, 496639, 534842, 632086, 802263, 906906, 948129, 993278, 1489917, 1604526, 1896258, 2979834, 3476473, 6952946, 10429419, 20858838]

約数ペア:

[(1, 20858838), (2, 10429419), (3, 6952946), (6, 3476473), (7, 2979834), (11, 1896258), (13, 1604526), (14, 1489917), (21, 993278), (22, 948129), (23, 906906), (26, 802263), (33, 632086), (39, 534842), (42, 496639), (46, 453453), (66, 316043), (69, 302302), (77, 270894), (78, 267421), (91, 229218), (138, 151151), (143, 145866), (151, 138138), (154, 135447), (161, 129558), (182, 114609), (231, 90298), (253, 82446), (273, 76406), (286, 72933), (299, 69762), (302, 69069), (322, 64779), (429, 48622), (453, 46046), (462, 45149), (483, 43186), (506, 41223), (546, 38203), (598, 34881), (759, 27482), (858, 24311), (897, 23254), (906, 23023), (966, 21593), (1001, 20838), (1057, 19734), (1518, 13741), (1661, 12558), (1771, 11778), (1794, 11627), (1963, 10626), (2002, 10419), (2093, 9966), (2114, 9867), (3003, 6946), (3171, 6578), (3289, 6342), (3322, 6279), (3473, 6006), (3542, 5889), (3926, 5313), (4186, 4983)]