About the Number

1397479920

1397479919 ← → 1397479921

2進数表記:1010011010010111101100111110000

漢数字表記:十三億九千七百四十七万九千九百二十

素因数分解:

2 4 × 3 1 × 5 1 × 107 1 × 54419 1

素因数の和:54542
約数の個数: 80
約数和(自身を含む): 4372755840
約数和(自身を除く): 2975275920

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 107, 120, 214, 240, 321, 428, 535, 642, 856, 1070, 1284, 1605, 1712, 2140, 2568, 3210, 4280, 5136, 6420, 8560, 12840, 25680, 54419, 108838, 163257, 217676, 272095, 326514, 435352, 544190, 653028, 816285, 870704, 1088380, 1306056, 1632570, 2176760, 2612112, 3265140, 4353520, 5822833, 6530280, 11645666, 13060560, 17468499, 23291332, 29114165, 34936998, 46582664, 58228330, 69873996, 87342495, 93165328, 116456660, 139747992, 174684990, 232913320, 279495984, 349369980, 465826640, 698739960, 1397479920]

約数ペア:
[(1, 1397479920), (2, 698739960), (3, 465826640), (4, 349369980), (5, 279495984), (6, 232913320), (8, 174684990), (10, 139747992), (12, 116456660), (15, 93165328), (16, 87342495), (20, 69873996), (24, 58228330), (30, 46582664), (40, 34936998), (48, 29114165), (60, 23291332), (80, 17468499), (107, 13060560), (120, 11645666), (214, 6530280), (240, 5822833), (321, 4353520), (428, 3265140), (535, 2612112), (642, 2176760), (856, 1632570), (1070, 1306056), (1284, 1088380), (1605, 870704), (1712, 816285), (2140, 653028), (2568, 544190), (3210, 435352), (4280, 326514), (5136, 272095), (6420, 217676), (8560, 163257), (12840, 108838), (25680, 54419)]

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