About the Number

199900980

199900979 ← → 199900981

2進数表記:1011111010100011111100110100

漢数字表記:一億九千九百九十万九百八十

素因数分解:

2 2 × 3 3 × 5 1 × 43 1 × 8609 1

素因数の和:8670
約数の個数: 96
約数和(自身を含む): 636451200
約数和(自身を除く): 436550220

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 860, 1161, 1290, 1548, 1935, 2322, 2580, 3870, 4644, 5805, 7740, 8609, 11610, 17218, 23220, 25827, 34436, 43045, 51654, 77481, 86090, 103308, 129135, 154962, 172180, 232443, 258270, 309924, 370187, 387405, 464886, 516540, 740374, 774810, 929772, 1110561, 1162215, 1480748, 1549620, 1850935, 2221122, 2324430, 3331683, 3701870, 4442244, 4648860, 5552805, 6663366, 7403740, 9995049, 11105610, 13326732, 16658415, 19990098, 22211220, 33316830, 39980196, 49975245, 66633660, 99950490, 199900980]

約数ペア:
[(1, 199900980), (2, 99950490), (3, 66633660), (4, 49975245), (5, 39980196), (6, 33316830), (9, 22211220), (10, 19990098), (12, 16658415), (15, 13326732), (18, 11105610), (20, 9995049), (27, 7403740), (30, 6663366), (36, 5552805), (43, 4648860), (45, 4442244), (54, 3701870), (60, 3331683), (86, 2324430), (90, 2221122), (108, 1850935), (129, 1549620), (135, 1480748), (172, 1162215), (180, 1110561), (215, 929772), (258, 774810), (270, 740374), (387, 516540), (430, 464886), (516, 387405), (540, 370187), (645, 309924), (774, 258270), (860, 232443), (1161, 172180), (1290, 154962), (1548, 129135), (1935, 103308), (2322, 86090), (2580, 77481), (3870, 51654), (4644, 43045), (5805, 34436), (7740, 25827), (8609, 23220), (11610, 17218)]

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