About the Number

1997697920

1997697919 ← → 1997697921

2進数表記:1110111000100100111001110000000

漢数字表記:十九億九千七百六十九万七千九百二十

素因数分解:

2 7 × 5 1 × 617 1 × 5059 1

素因数の和:5695
約数の個数: 64
約数和(自身を含む): 4784432400
約数和(自身を除く): 2786734480

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 617, 640, 1234, 2468, 3085, 4936, 5059, 6170, 9872, 10118, 12340, 19744, 20236, 24680, 25295, 39488, 40472, 49360, 50590, 78976, 80944, 98720, 101180, 161888, 197440, 202360, 323776, 394880, 404720, 647552, 809440, 1618880, 3121403, 3237760, 6242806, 12485612, 15607015, 24971224, 31214030, 49942448, 62428060, 99884896, 124856120, 199769792, 249712240, 399539584, 499424480, 998848960, 1997697920]

約数ペア:
[(1, 1997697920), (2, 998848960), (4, 499424480), (5, 399539584), (8, 249712240), (10, 199769792), (16, 124856120), (20, 99884896), (32, 62428060), (40, 49942448), (64, 31214030), (80, 24971224), (128, 15607015), (160, 12485612), (320, 6242806), (617, 3237760), (640, 3121403), (1234, 1618880), (2468, 809440), (3085, 647552), (4936, 404720), (5059, 394880), (6170, 323776), (9872, 202360), (10118, 197440), (12340, 161888), (19744, 101180), (20236, 98720), (24680, 80944), (25295, 78976), (39488, 50590), (40472, 49360)]

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