About the Number
28278880
2進数表記:1101011111000000001100000
漢数字表記:二千八百二十七万八千八百八十
素因数分解:
素因数の和:3636
約数の個数: 72
約数和(自身を含む): 77737968
約数和(自身を除く): 49459088
約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3607, 3920, 7214, 7840, 14428, 18035, 25249, 28856, 36070, 50498, 57712, 72140, 100996, 115424, 126245, 144280, 176743, 201992, 252490, 288560, 353486, 403984, 504980, 577120, 706972, 807968, 883715, 1009960, 1413944, 1767430, 2019920, 2827888, 3534860, 4039840, 5655776, 7069720, 14139440, 28278880]
約数ペア:
[(1, 28278880), (2, 14139440), (4, 7069720), (5, 5655776), (7, 4039840), (8, 3534860), (10, 2827888), (14, 2019920), (16, 1767430), (20, 1413944), (28, 1009960), (32, 883715), (35, 807968), (40, 706972), (49, 577120), (56, 504980), (70, 403984), (80, 353486), (98, 288560), (112, 252490), (140, 201992), (160, 176743), (196, 144280), (224, 126245), (245, 115424), (280, 100996), (392, 72140), (490, 57712), (560, 50498), (784, 36070), (980, 28856), (1120, 25249), (1568, 18035), (1960, 14428), (3607, 7840), (3920, 7214)]このpageの処理時間: 0.005266427993774414 seconds