About the Number

1290230788

1290230787 ← → 1290230789

2進数表記:1001100111001110101110000000100

漢数字表記:十二億九千二十三万七百八十八

素因数分解:

2 2 × 7 1 × 11 1 × 31 1 × 135131 1

素因数の和:135184
約数の個数: 48
約数和(自身を含む): 2905878528
約数和(自身を除く): 1615647740

約数列:
[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2387, 4774, 9548, 135131, 270262, 540524, 945917, 1486441, 1891834, 2972882, 3783668, 4189061, 5945764, 8378122, 10405087, 16756244, 20810174, 29323427, 41620348, 46079671, 58646854, 92159342, 117293708, 184318684, 322557697, 645115394, 1290230788]

約数ペア:
[(1, 1290230788), (2, 645115394), (4, 322557697), (7, 184318684), (11, 117293708), (14, 92159342), (22, 58646854), (28, 46079671), (31, 41620348), (44, 29323427), (62, 20810174), (77, 16756244), (124, 10405087), (154, 8378122), (217, 5945764), (308, 4189061), (341, 3783668), (434, 2972882), (682, 1891834), (868, 1486441), (1364, 945917), (2387, 540524), (4774, 270262), (9548, 135131)]

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