640775952

素因数分解:

$2^4\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^2$

素因数の和:226

約数の個数: 180

約数和(自身を含む): 1956374784

約数和(自身を除く): 1315598832

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 31, 36, 46, 48, 62, 69, 72, 79, 92, 93, 124, 138, 144, 158, 184, 186, 207, 237, 248, 276, 279, 316, 368, 372, 414, 474, 496, 552, 558, 632, 711, 713, 744, 828, 948, 1104, 1116, 1264, 1422, 1426, 1488, 1656, 1817, 1896, 2139, 2232, 2449, 2844, 2852, 3312, 3634, 3792, 4278, 4464, 4898, 5451, 5688, 5704, 6241, 6417, 7268, 7347, 8556, 9796, 10902, 11376, 11408, 12482, 12834, 14536, 14694, 16353, 17112, 18723, 19592, 21804, 22041, 24964, 25668, 29072, 29388, 32706, 34224, 37446, 39184, 43608, 44082, 49928, 51336, 56169, 56327, 58776, 65412, 74892, 87216, 88164, 99856, 102672, 112338, 112654, 117552, 130824, 143543, 149784, 168981, 176328, 193471, 224676, 225308, 261648, 287086, 299568, 337962, 352656, 386942, 430629, 449352, 450616, 506943, 574172, 580413, 675924, 773884, 861258, 898704, 901232, 1013886, 1148344, 1160826, 1291887, 1351848, 1547768, 1722516, 1741239, 2027772, 2296688, 2321652, 2583774, 2703696, 3095536, 3445032, 3482478, 4055544, 4449833, 4643304, 5167548, 6890064, 6964956, 8111088, 8899666, 9286608, 10335096, 13349499, 13929912, 17799332, 20670192, 26698998, 27859824, 35598664, 40048497, 53397996, 71197328, 80096994, 106795992, 160193988, 213591984, 320387976, 640775952]

約数ペア:

[(1, 640775952), (2, 320387976), (3, 213591984), (4, 160193988), (6, 106795992), (8, 80096994), (9, 71197328), (12, 53397996), (16, 40048497), (18, 35598664), (23, 27859824), (24, 26698998), (31, 20670192), (36, 17799332), (46, 13929912), (48, 13349499), (62, 10335096), (69, 9286608), (72, 8899666), (79, 8111088), (92, 6964956), (93, 6890064), (124, 5167548), (138, 4643304), (144, 4449833), (158, 4055544), (184, 3482478), (186, 3445032), (207, 3095536), (237, 2703696), (248, 2583774), (276, 2321652), (279, 2296688), (316, 2027772), (368, 1741239), (372, 1722516), (414, 1547768), (474, 1351848), (496, 1291887), (552, 1160826), (558, 1148344), (632, 1013886), (711, 901232), (713, 898704), (744, 861258), (828, 773884), (948, 675924), (1104, 580413), (1116, 574172), (1264, 506943), (1422, 450616), (1426, 449352), (1488, 430629), (1656, 386942), (1817, 352656), (1896, 337962), (2139, 299568), (2232, 287086), (2449, 261648), (2844, 225308), (2852, 224676), (3312, 193471), (3634, 176328), (3792, 168981), (4278, 149784), (4464, 143543), (4898, 130824), (5451, 117552), (5688, 112654), (5704, 112338), (6241, 102672), (6417, 99856), (7268, 88164), (7347, 87216), (8556, 74892), (9796, 65412), (10902, 58776), (11376, 56327), (11408, 56169), (12482, 51336), (12834, 49928), (14536, 44082), (14694, 43608), (16353, 39184), (17112, 37446), (18723, 34224), (19592, 32706), (21804, 29388), (22041, 29072), (24964, 25668)]