About the Number

79821990

79821989 ← → 79821991

2進数表記:100110000011111110010100110

漢数字表記:七千九百八十二万千九百九十

素因数分解:

2 1 × 3 3 × 5 1 × 293 1 × 1009 1

素因数の和:1318
約数の個数: 64
約数和(自身を含む): 213796800
約数和(自身を除く): 133974810

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 293, 586, 879, 1009, 1465, 1758, 2018, 2637, 2930, 3027, 4395, 5045, 5274, 6054, 7911, 8790, 9081, 10090, 13185, 15135, 15822, 18162, 26370, 27243, 30270, 39555, 45405, 54486, 79110, 90810, 136215, 272430, 295637, 591274, 886911, 1478185, 1773822, 2660733, 2956370, 4434555, 5321466, 7982199, 8869110, 13303665, 15964398, 26607330, 39910995, 79821990]

約数ペア:
[(1, 79821990), (2, 39910995), (3, 26607330), (5, 15964398), (6, 13303665), (9, 8869110), (10, 7982199), (15, 5321466), (18, 4434555), (27, 2956370), (30, 2660733), (45, 1773822), (54, 1478185), (90, 886911), (135, 591274), (270, 295637), (293, 272430), (586, 136215), (879, 90810), (1009, 79110), (1465, 54486), (1758, 45405), (2018, 39555), (2637, 30270), (2930, 27243), (3027, 26370), (4395, 18162), (5045, 15822), (5274, 15135), (6054, 13185), (7911, 10090), (8790, 9081)]

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