About the Number

131228790

131228789 ← → 131228791

2進数表記:111110100100110010001110110

漢数字表記:一億三千百二十二万八千七百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 11 1 × 56809 1

素因数の和:56837
約数の個数: 64
約数和(自身を含む): 392670720
約数和(自身を除く): 261441930

約数列:
[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 56809, 113618, 170427, 284045, 340854, 397663, 568090, 624899, 795326, 852135, 1192989, 1249798, 1704270, 1874697, 1988315, 2385978, 3124495, 3749394, 3976630, 4374293, 5964945, 6248990, 8748586, 9373485, 11929890, 13122879, 18746970, 21871465, 26245758, 43742930, 65614395, 131228790]

約数ペア:
[(1, 131228790), (2, 65614395), (3, 43742930), (5, 26245758), (6, 21871465), (7, 18746970), (10, 13122879), (11, 11929890), (14, 9373485), (15, 8748586), (21, 6248990), (22, 5964945), (30, 4374293), (33, 3976630), (35, 3749394), (42, 3124495), (55, 2385978), (66, 1988315), (70, 1874697), (77, 1704270), (105, 1249798), (110, 1192989), (154, 852135), (165, 795326), (210, 624899), (231, 568090), (330, 397663), (385, 340854), (462, 284045), (770, 170427), (1155, 113618), (2310, 56809)]

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