About the Number

28007880

28007879 ← → 28007881

2進数表記:1101010110101110111001000

漢数字表記:二千八百万七千八百八十

素因数分解:

2 3 × 3 1 × 5 1 × 31 1 × 7529 1

素因数の和:7574
約数の個数: 64
約数和(自身を含む): 86745600
約数和(自身を除く): 58737720

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 7529, 15058, 22587, 30116, 37645, 45174, 60232, 75290, 90348, 112935, 150580, 180696, 225870, 233399, 301160, 451740, 466798, 700197, 903480, 933596, 1166995, 1400394, 1867192, 2333990, 2800788, 3500985, 4667980, 5601576, 7001970, 9335960, 14003940, 28007880]

約数ペア:
[(1, 28007880), (2, 14003940), (3, 9335960), (4, 7001970), (5, 5601576), (6, 4667980), (8, 3500985), (10, 2800788), (12, 2333990), (15, 1867192), (20, 1400394), (24, 1166995), (30, 933596), (31, 903480), (40, 700197), (60, 466798), (62, 451740), (93, 301160), (120, 233399), (124, 225870), (155, 180696), (186, 150580), (248, 112935), (310, 90348), (372, 75290), (465, 60232), (620, 45174), (744, 37645), (930, 30116), (1240, 22587), (1860, 15058), (3720, 7529)]

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