199977778

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 128

約数和(自身を含む): 434294784

約数和(自身を除く): 234317006

約数列:

[1, 2, 7, 11, 13, 14, 22, 23, 26, 43, 46, 77, 86, 91, 101, 143, 154, 161, 182, 202, 253, 286, 299, 301, 322, 473, 506, 559, 598, 602, 707, 946, 989, 1001, 1111, 1118, 1313, 1414, 1771, 1978, 2002, 2093, 2222, 2323, 2626, 3289, 3311, 3542, 3913, 4186, 4343, 4646, 6149, 6578, 6622, 6923, 7777, 7826, 8686, 9191, 10879, 12298, 12857, 13846, 14443, 15554, 16261, 18382, 21758, 23023, 25553, 25714, 28886, 30199, 30401, 32522, 43043, 46046, 47773, 51106, 56459, 60398, 60802, 76153, 86086, 89999, 95546, 99889, 101101, 112918, 141427, 152306, 178871, 179998, 199778, 202202, 211393, 282854, 332189, 334411, 357742, 395213, 422786, 621049, 664378, 668822, 699223, 790426, 989989, 1098779, 1242098, 1298557, 1398446, 1979978, 2197558, 2325323, 2597114, 4347343, 4650646, 7691453, 8694686, 9089899, 14284127, 15382906, 18179798, 28568254, 99988889, 199977778]

約数ペア:

[(1, 199977778), (2, 99988889), (7, 28568254), (11, 18179798), (13, 15382906), (14, 14284127), (22, 9089899), (23, 8694686), (26, 7691453), (43, 4650646), (46, 4347343), (77, 2597114), (86, 2325323), (91, 2197558), (101, 1979978), (143, 1398446), (154, 1298557), (161, 1242098), (182, 1098779), (202, 989989), (253, 790426), (286, 699223), (299, 668822), (301, 664378), (322, 621049), (473, 422786), (506, 395213), (559, 357742), (598, 334411), (602, 332189), (707, 282854), (946, 211393), (989, 202202), (1001, 199778), (1111, 179998), (1118, 178871), (1313, 152306), (1414, 141427), (1771, 112918), (1978, 101101), (2002, 99889), (2093, 95546), (2222, 89999), (2323, 86086), (2626, 76153), (3289, 60802), (3311, 60398), (3542, 56459), (3913, 51106), (4186, 47773), (4343, 46046), (4646, 43043), (6149, 32522), (6578, 30401), (6622, 30199), (6923, 28886), (7777, 25714), (7826, 25553), (8686, 23023), (9191, 21758), (10879, 18382), (12298, 16261), (12857, 15554), (13846, 14443)]