20964944

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:74

約数の個数: 180

約数和(自身を含む): 59222772

約数和(自身を除く): 38257828

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 17, 22, 26, 28, 34, 44, 49, 52, 56, 68, 77, 88, 91, 98, 104, 112, 119, 121, 136, 143, 154, 176, 182, 187, 196, 208, 221, 238, 242, 272, 286, 308, 364, 374, 392, 442, 476, 484, 539, 572, 616, 637, 728, 748, 784, 833, 847, 884, 952, 968, 1001, 1078, 1144, 1232, 1274, 1309, 1456, 1496, 1547, 1573, 1666, 1694, 1768, 1904, 1936, 2002, 2057, 2156, 2288, 2431, 2548, 2618, 2992, 3094, 3146, 3332, 3388, 3536, 4004, 4114, 4312, 4862, 5096, 5236, 5929, 6188, 6292, 6664, 6776, 7007, 8008, 8228, 8624, 9163, 9724, 10192, 10472, 10829, 11011, 11858, 12376, 12584, 13328, 13552, 14014, 14399, 16016, 16456, 17017, 18326, 19448, 20944, 21658, 22022, 23716, 24752, 25168, 26741, 28028, 28798, 32912, 34034, 36652, 38896, 43316, 44044, 47432, 53482, 56056, 57596, 68068, 73304, 77077, 86632, 88088, 94864, 100793, 106964, 112112, 115192, 119119, 136136, 146608, 154154, 173264, 176176, 187187, 201586, 213928, 230384, 238238, 272272, 308308, 374374, 403172, 427856, 476476, 616616, 748748, 806344, 952952, 1233232, 1310309, 1497496, 1612688, 1905904, 2620618, 2994992, 5241236, 10482472, 20964944]

約数ペア:

[(1, 20964944), (2, 10482472), (4, 5241236), (7, 2994992), (8, 2620618), (11, 1905904), (13, 1612688), (14, 1497496), (16, 1310309), (17, 1233232), (22, 952952), (26, 806344), (28, 748748), (34, 616616), (44, 476476), (49, 427856), (52, 403172), (56, 374374), (68, 308308), (77, 272272), (88, 238238), (91, 230384), (98, 213928), (104, 201586), (112, 187187), (119, 176176), (121, 173264), (136, 154154), (143, 146608), (154, 136136), (176, 119119), (182, 115192), (187, 112112), (196, 106964), (208, 100793), (221, 94864), (238, 88088), (242, 86632), (272, 77077), (286, 73304), (308, 68068), (364, 57596), (374, 56056), (392, 53482), (442, 47432), (476, 44044), (484, 43316), (539, 38896), (572, 36652), (616, 34034), (637, 32912), (728, 28798), (748, 28028), (784, 26741), (833, 25168), (847, 24752), (884, 23716), (952, 22022), (968, 21658), (1001, 20944), (1078, 19448), (1144, 18326), (1232, 17017), (1274, 16456), (1309, 16016), (1456, 14399), (1496, 14014), (1547, 13552), (1573, 13328), (1666, 12584), (1694, 12376), (1768, 11858), (1904, 11011), (1936, 10829), (2002, 10472), (2057, 10192), (2156, 9724), (2288, 9163), (2431, 8624), (2548, 8228), (2618, 8008), (2992, 7007), (3094, 6776), (3146, 6664), (3332, 6292), (3388, 6188), (3536, 5929), (4004, 5236), (4114, 5096), (4312, 4862)]