About the Number

1288973880

1288973879 ← → 1288973881

2進数表記:1001100110101000010111000111000

漢数字表記:十二億八千八百九十七万三千八百八十

素因数分解:

2 3 × 3 2 × 5 1 × 991 1 × 3613 1

素因数の和:4621
約数の個数: 96
約数和(自身を含む): 4194552960
約数和(自身を除く): 2905579080

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 991, 1982, 2973, 3613, 3964, 4955, 5946, 7226, 7928, 8919, 9910, 10839, 11892, 14452, 14865, 17838, 18065, 19820, 21678, 23784, 28904, 29730, 32517, 35676, 36130, 39640, 43356, 44595, 54195, 59460, 65034, 71352, 72260, 86712, 89190, 108390, 118920, 130068, 144520, 162585, 178380, 216780, 260136, 325170, 356760, 433560, 650340, 1300680, 3580483, 7160966, 10741449, 14321932, 17902415, 21482898, 28643864, 32224347, 35804830, 42965796, 53707245, 64448694, 71609660, 85931592, 107414490, 128897388, 143219320, 161121735, 214828980, 257794776, 322243470, 429657960, 644486940, 1288973880]

約数ペア:
[(1, 1288973880), (2, 644486940), (3, 429657960), (4, 322243470), (5, 257794776), (6, 214828980), (8, 161121735), (9, 143219320), (10, 128897388), (12, 107414490), (15, 85931592), (18, 71609660), (20, 64448694), (24, 53707245), (30, 42965796), (36, 35804830), (40, 32224347), (45, 28643864), (60, 21482898), (72, 17902415), (90, 14321932), (120, 10741449), (180, 7160966), (360, 3580483), (991, 1300680), (1982, 650340), (2973, 433560), (3613, 356760), (3964, 325170), (4955, 260136), (5946, 216780), (7226, 178380), (7928, 162585), (8919, 144520), (9910, 130068), (10839, 118920), (11892, 108390), (14452, 89190), (14865, 86712), (17838, 72260), (18065, 71352), (19820, 65034), (21678, 59460), (23784, 54195), (28904, 44595), (29730, 43356), (32517, 39640), (35676, 36130)]

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