20020728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:221

約数の個数: 128

約数和(自身を含む): 62899200

約数和(自身を除く): 42878472

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 89, 91, 103, 104, 156, 168, 178, 182, 206, 267, 273, 309, 312, 356, 364, 412, 534, 546, 618, 623, 712, 721, 728, 824, 1068, 1092, 1157, 1236, 1246, 1339, 1442, 1869, 2136, 2163, 2184, 2314, 2472, 2492, 2678, 2884, 3471, 3738, 4017, 4326, 4628, 4984, 5356, 5768, 6942, 7476, 8034, 8099, 8652, 9167, 9256, 9373, 10712, 13884, 14952, 16068, 16198, 17304, 18334, 18746, 24297, 27501, 27768, 28119, 32136, 32396, 36668, 37492, 48594, 55002, 56238, 64169, 64792, 73336, 74984, 97188, 110004, 112476, 119171, 128338, 192507, 194376, 220008, 224952, 238342, 256676, 357513, 385014, 476684, 513352, 715026, 770028, 834197, 953368, 1430052, 1540056, 1668394, 2502591, 2860104, 3336788, 5005182, 6673576, 10010364, 20020728]

約数ペア:

[(1, 20020728), (2, 10010364), (3, 6673576), (4, 5005182), (6, 3336788), (7, 2860104), (8, 2502591), (12, 1668394), (13, 1540056), (14, 1430052), (21, 953368), (24, 834197), (26, 770028), (28, 715026), (39, 513352), (42, 476684), (52, 385014), (56, 357513), (78, 256676), (84, 238342), (89, 224952), (91, 220008), (103, 194376), (104, 192507), (156, 128338), (168, 119171), (178, 112476), (182, 110004), (206, 97188), (267, 74984), (273, 73336), (309, 64792), (312, 64169), (356, 56238), (364, 55002), (412, 48594), (534, 37492), (546, 36668), (618, 32396), (623, 32136), (712, 28119), (721, 27768), (728, 27501), (824, 24297), (1068, 18746), (1092, 18334), (1157, 17304), (1236, 16198), (1246, 16068), (1339, 14952), (1442, 13884), (1869, 10712), (2136, 9373), (2163, 9256), (2184, 9167), (2314, 8652), (2472, 8099), (2492, 8034), (2678, 7476), (2884, 6942), (3471, 5768), (3738, 5356), (4017, 4984), (4326, 4628)]