About the Number

12408720

12408719 ← → 12408721

2進数表記:101111010101011110010000

漢数字表記:千二百四十万八千七百二十

素因数分解:

2 4 × 3 1 × 5 1 × 149 1 × 347 1

素因数の和:512
約数の個数: 80
約数和(自身を含む): 38836800
約数和(自身を除く): 26428080

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 149, 240, 298, 347, 447, 596, 694, 745, 894, 1041, 1192, 1388, 1490, 1735, 1788, 2082, 2235, 2384, 2776, 2980, 3470, 3576, 4164, 4470, 5205, 5552, 5960, 6940, 7152, 8328, 8940, 10410, 11920, 13880, 16656, 17880, 20820, 27760, 35760, 41640, 51703, 83280, 103406, 155109, 206812, 258515, 310218, 413624, 517030, 620436, 775545, 827248, 1034060, 1240872, 1551090, 2068120, 2481744, 3102180, 4136240, 6204360, 12408720]

約数ペア:
[(1, 12408720), (2, 6204360), (3, 4136240), (4, 3102180), (5, 2481744), (6, 2068120), (8, 1551090), (10, 1240872), (12, 1034060), (15, 827248), (16, 775545), (20, 620436), (24, 517030), (30, 413624), (40, 310218), (48, 258515), (60, 206812), (80, 155109), (120, 103406), (149, 83280), (240, 51703), (298, 41640), (347, 35760), (447, 27760), (596, 20820), (694, 17880), (745, 16656), (894, 13880), (1041, 11920), (1192, 10410), (1388, 8940), (1490, 8328), (1735, 7152), (1788, 6940), (2082, 5960), (2235, 5552), (2384, 5205), (2776, 4470), (2980, 4164), (3470, 3576)]

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