21640164

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 67032000

約数和(自身を除く): 45391836

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 19, 21, 26, 28, 38, 39, 42, 49, 52, 57, 76, 78, 84, 91, 98, 114, 133, 147, 149, 156, 182, 196, 228, 247, 266, 273, 294, 298, 364, 399, 447, 494, 532, 546, 588, 596, 637, 741, 798, 894, 931, 988, 1043, 1092, 1274, 1482, 1596, 1729, 1788, 1862, 1911, 1937, 2086, 2548, 2793, 2831, 2964, 3129, 3458, 3724, 3822, 3874, 4172, 5187, 5586, 5662, 5811, 6258, 6916, 7301, 7644, 7748, 8493, 10374, 11172, 11324, 11622, 12103, 12516, 13559, 14602, 16986, 19817, 20748, 21903, 23244, 24206, 27118, 29204, 33972, 36309, 36803, 39634, 40677, 43806, 48412, 54236, 59451, 72618, 73606, 79268, 81354, 87612, 94913, 110409, 118902, 138719, 145236, 147212, 162708, 189826, 220818, 237804, 257621, 277438, 284739, 379652, 416157, 441636, 515242, 554876, 569478, 772863, 832314, 1030484, 1138956, 1545726, 1664628, 1803347, 3091452, 3606694, 5410041, 7213388, 10820082, 21640164]

約数ペア:

[(1, 21640164), (2, 10820082), (3, 7213388), (4, 5410041), (6, 3606694), (7, 3091452), (12, 1803347), (13, 1664628), (14, 1545726), (19, 1138956), (21, 1030484), (26, 832314), (28, 772863), (38, 569478), (39, 554876), (42, 515242), (49, 441636), (52, 416157), (57, 379652), (76, 284739), (78, 277438), (84, 257621), (91, 237804), (98, 220818), (114, 189826), (133, 162708), (147, 147212), (149, 145236), (156, 138719), (182, 118902), (196, 110409), (228, 94913), (247, 87612), (266, 81354), (273, 79268), (294, 73606), (298, 72618), (364, 59451), (399, 54236), (447, 48412), (494, 43806), (532, 40677), (546, 39634), (588, 36803), (596, 36309), (637, 33972), (741, 29204), (798, 27118), (894, 24206), (931, 23244), (988, 21903), (1043, 20748), (1092, 19817), (1274, 16986), (1482, 14602), (1596, 13559), (1729, 12516), (1788, 12103), (1862, 11622), (1911, 11324), (1937, 11172), (2086, 10374), (2548, 8493), (2793, 7748), (2831, 7644), (2964, 7301), (3129, 6916), (3458, 6258), (3724, 5811), (3822, 5662), (3874, 5586), (4172, 5187)]