About the Number

7128240

7128239 ← → 7128241

2進数表記:11011001100010010110000

漢数字表記:七百十二万八千二百四十

素因数分解:

2 4 × 3 1 × 5 1 × 7 1 × 4243 1

素因数の和:4266
約数の個数: 80
約数和(自身を含む): 25260288
約数和(自身を除く): 18132048

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 4243, 8486, 12729, 16972, 21215, 25458, 29701, 33944, 42430, 50916, 59402, 63645, 67888, 84860, 89103, 101832, 118804, 127290, 148505, 169720, 178206, 203664, 237608, 254580, 297010, 339440, 356412, 445515, 475216, 509160, 594020, 712824, 891030, 1018320, 1188040, 1425648, 1782060, 2376080, 3564120, 7128240]

約数ペア:
[(1, 7128240), (2, 3564120), (3, 2376080), (4, 1782060), (5, 1425648), (6, 1188040), (7, 1018320), (8, 891030), (10, 712824), (12, 594020), (14, 509160), (15, 475216), (16, 445515), (20, 356412), (21, 339440), (24, 297010), (28, 254580), (30, 237608), (35, 203664), (40, 178206), (42, 169720), (48, 148505), (56, 127290), (60, 118804), (70, 101832), (80, 89103), (84, 84860), (105, 67888), (112, 63645), (120, 59402), (140, 50916), (168, 42430), (210, 33944), (240, 29701), (280, 25458), (336, 21215), (420, 16972), (560, 12729), (840, 8486), (1680, 4243)]

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