About the Number

1280401128

1280401127 ← → 1280401129

2進数表記:1001100010100010101111011101000

漢数字表記:十二億八千四十万千百二十八

素因数分解:

2 3 × 3 3 × 443 1 × 13381 1

素因数の和:13839
約数の個数: 64
約数和(自身を含む): 3564964800
約数和(自身を除く): 2284563672

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 443, 886, 1329, 1772, 2658, 3544, 3987, 5316, 7974, 10632, 11961, 13381, 15948, 23922, 26762, 31896, 40143, 47844, 53524, 80286, 95688, 107048, 120429, 160572, 240858, 321144, 361287, 481716, 722574, 963432, 1445148, 2890296, 5927783, 11855566, 17783349, 23711132, 35566698, 47422264, 53350047, 71133396, 106700094, 142266792, 160050141, 213400188, 320100282, 426800376, 640200564, 1280401128]

約数ペア:
[(1, 1280401128), (2, 640200564), (3, 426800376), (4, 320100282), (6, 213400188), (8, 160050141), (9, 142266792), (12, 106700094), (18, 71133396), (24, 53350047), (27, 47422264), (36, 35566698), (54, 23711132), (72, 17783349), (108, 11855566), (216, 5927783), (443, 2890296), (886, 1445148), (1329, 963432), (1772, 722574), (2658, 481716), (3544, 361287), (3987, 321144), (5316, 240858), (7974, 160572), (10632, 120429), (11961, 107048), (13381, 95688), (15948, 80286), (23922, 53524), (26762, 47844), (31896, 40143)]

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