640100994

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:360

約数の個数: 128

約数和(自身を含む): 1538611200

約数和(自身を除く): 898510206

約数列:

[1, 2, 3, 6, 13, 19, 23, 26, 38, 39, 46, 57, 69, 78, 89, 114, 138, 178, 211, 247, 267, 299, 422, 437, 494, 534, 598, 633, 741, 874, 897, 1157, 1266, 1311, 1482, 1691, 1794, 2047, 2314, 2622, 2743, 3382, 3471, 4009, 4094, 4853, 5073, 5486, 5681, 6141, 6942, 8018, 8229, 9706, 10146, 11362, 12027, 12282, 14559, 16458, 17043, 18779, 21983, 24054, 26611, 29118, 34086, 37558, 38893, 43966, 52117, 53222, 56337, 63089, 65949, 77786, 79833, 92207, 104234, 112674, 116679, 126178, 131898, 156351, 159666, 184414, 189267, 233358, 244127, 276621, 312702, 356801, 378534, 431917, 488254, 505609, 553242, 713602, 732381, 863834, 1011218, 1070403, 1198691, 1295751, 1464762, 1516827, 2140806, 2397382, 2591502, 3033654, 3596073, 4638413, 5614921, 7192146, 8206423, 9276826, 11229842, 13915239, 16412846, 16844763, 24619269, 27830478, 33689526, 49238538, 106683499, 213366998, 320050497, 640100994]

約数ペア:

[(1, 640100994), (2, 320050497), (3, 213366998), (6, 106683499), (13, 49238538), (19, 33689526), (23, 27830478), (26, 24619269), (38, 16844763), (39, 16412846), (46, 13915239), (57, 11229842), (69, 9276826), (78, 8206423), (89, 7192146), (114, 5614921), (138, 4638413), (178, 3596073), (211, 3033654), (247, 2591502), (267, 2397382), (299, 2140806), (422, 1516827), (437, 1464762), (494, 1295751), (534, 1198691), (598, 1070403), (633, 1011218), (741, 863834), (874, 732381), (897, 713602), (1157, 553242), (1266, 505609), (1311, 488254), (1482, 431917), (1691, 378534), (1794, 356801), (2047, 312702), (2314, 276621), (2622, 244127), (2743, 233358), (3382, 189267), (3471, 184414), (4009, 159666), (4094, 156351), (4853, 131898), (5073, 126178), (5486, 116679), (5681, 112674), (6141, 104234), (6942, 92207), (8018, 79833), (8229, 77786), (9706, 65949), (10146, 63089), (11362, 56337), (12027, 53222), (12282, 52117), (14559, 43966), (16458, 38893), (17043, 37558), (18779, 34086), (21983, 29118), (24054, 26611)]