About the Number

238931280

238931279 ← → 238931281

2進数表記:1110001111011100110101010000

漢数字表記:二億三千八百九十三万千二百八十

素因数分解:

2 4 × 3 2 × 5 1 × 7 1 × 47407 1

素因数の和:47433
約数の個数: 120
約数和(自身を含む): 917060352
約数和(自身を除く): 678129072

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 47407, 94814, 142221, 189628, 237035, 284442, 331849, 379256, 426663, 474070, 568884, 663698, 711105, 758512, 853326, 948140, 995547, 1137768, 1327396, 1422210, 1659245, 1706652, 1896280, 1991094, 2133315, 2275536, 2654792, 2844420, 2986641, 3318490, 3413304, 3792560, 3982188, 4266630, 4977735, 5309584, 5688840, 5973282, 6636980, 6826608, 7964376, 8533260, 9955470, 11377680, 11946564, 13273960, 14933205, 15928752, 17066520, 19910940, 23893128, 26547920, 29866410, 34133040, 39821880, 47786256, 59732820, 79643760, 119465640, 238931280]

約数ペア:
[(1, 238931280), (2, 119465640), (3, 79643760), (4, 59732820), (5, 47786256), (6, 39821880), (7, 34133040), (8, 29866410), (9, 26547920), (10, 23893128), (12, 19910940), (14, 17066520), (15, 15928752), (16, 14933205), (18, 13273960), (20, 11946564), (21, 11377680), (24, 9955470), (28, 8533260), (30, 7964376), (35, 6826608), (36, 6636980), (40, 5973282), (42, 5688840), (45, 5309584), (48, 4977735), (56, 4266630), (60, 3982188), (63, 3792560), (70, 3413304), (72, 3318490), (80, 2986641), (84, 2844420), (90, 2654792), (105, 2275536), (112, 2133315), (120, 1991094), (126, 1896280), (140, 1706652), (144, 1659245), (168, 1422210), (180, 1327396), (210, 1137768), (240, 995547), (252, 948140), (280, 853326), (315, 758512), (336, 711105), (360, 663698), (420, 568884), (504, 474070), (560, 426663), (630, 379256), (720, 331849), (840, 284442), (1008, 237035), (1260, 189628), (1680, 142221), (2520, 94814), (5040, 47407)]

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