About the Number

1242578890

1242578889 ← → 1242578891

2進数表記:1001010000100000011111111001010

漢数字表記:十二億四千二百五十七万八千八百九十

素因数分解:

2 1 × 5 1 × 7 1 × 31 1 × 83 1 × 6899 1

素因数の和:7027
約数の個数: 64
約数和(自身を含む): 2670796800
約数和(自身を除く): 1428217910

約数列:
[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 83, 155, 166, 217, 310, 415, 434, 581, 830, 1085, 1162, 2170, 2573, 2905, 5146, 5810, 6899, 12865, 13798, 18011, 25730, 34495, 36022, 48293, 68990, 90055, 96586, 180110, 213869, 241465, 427738, 482930, 572617, 1069345, 1145234, 1497083, 2138690, 2863085, 2994166, 4008319, 5726170, 7485415, 8016638, 14970830, 17751127, 20041595, 35502254, 40083190, 88755635, 124257889, 177511270, 248515778, 621289445, 1242578890]

約数ペア:
[(1, 1242578890), (2, 621289445), (5, 248515778), (7, 177511270), (10, 124257889), (14, 88755635), (31, 40083190), (35, 35502254), (62, 20041595), (70, 17751127), (83, 14970830), (155, 8016638), (166, 7485415), (217, 5726170), (310, 4008319), (415, 2994166), (434, 2863085), (581, 2138690), (830, 1497083), (1085, 1145234), (1162, 1069345), (2170, 572617), (2573, 482930), (2905, 427738), (5146, 241465), (5810, 213869), (6899, 180110), (12865, 96586), (13798, 90055), (18011, 68990), (25730, 48293), (34495, 36022)]

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