About the Number

280809990

280809989 ← → 280809991

2進数表記:10000101111001101001000000110

漢数字表記:二億八千八十万九千九百九十

素因数分解:

2 1 × 3 4 × 5 1 × 23 1 × 15073 1

素因数の和:15115
約数の個数: 80
約数和(自身を含む): 787948128
約数和(自身を除く): 507138138

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 81, 90, 115, 135, 138, 162, 207, 230, 270, 345, 405, 414, 621, 690, 810, 1035, 1242, 1863, 2070, 3105, 3726, 6210, 9315, 15073, 18630, 30146, 45219, 75365, 90438, 135657, 150730, 226095, 271314, 346679, 406971, 452190, 678285, 693358, 813942, 1040037, 1220913, 1356570, 1733395, 2034855, 2080074, 2441826, 3120111, 3466790, 4069710, 5200185, 6104565, 6240222, 9360333, 10400370, 12209130, 15600555, 18720666, 28080999, 31201110, 46801665, 56161998, 93603330, 140404995, 280809990]

約数ペア:
[(1, 280809990), (2, 140404995), (3, 93603330), (5, 56161998), (6, 46801665), (9, 31201110), (10, 28080999), (15, 18720666), (18, 15600555), (23, 12209130), (27, 10400370), (30, 9360333), (45, 6240222), (46, 6104565), (54, 5200185), (69, 4069710), (81, 3466790), (90, 3120111), (115, 2441826), (135, 2080074), (138, 2034855), (162, 1733395), (207, 1356570), (230, 1220913), (270, 1040037), (345, 813942), (405, 693358), (414, 678285), (621, 452190), (690, 406971), (810, 346679), (1035, 271314), (1242, 226095), (1863, 150730), (2070, 135657), (3105, 90438), (3726, 75365), (6210, 45219), (9315, 30146), (15073, 18630)]

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