About the Number

388542990

388542989 ← → 388542991

2進数表記:10111001010001011001000001110

漢数字表記:三億八千八百五十四万二千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 11 1 × 17 1 × 69259 1

素因数の和:69297
約数の個数: 64
約数和(自身を含む): 1077131520
約数和(自身を除く): 688588530

約数列:
[1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 30, 33, 34, 51, 55, 66, 85, 102, 110, 165, 170, 187, 255, 330, 374, 510, 561, 935, 1122, 1870, 2805, 5610, 69259, 138518, 207777, 346295, 415554, 692590, 761849, 1038885, 1177403, 1523698, 2077770, 2285547, 2354806, 3532209, 3809245, 4571094, 5887015, 7064418, 7618490, 11427735, 11774030, 12951433, 17661045, 22855470, 25902866, 35322090, 38854299, 64757165, 77708598, 129514330, 194271495, 388542990]

約数ペア:
[(1, 388542990), (2, 194271495), (3, 129514330), (5, 77708598), (6, 64757165), (10, 38854299), (11, 35322090), (15, 25902866), (17, 22855470), (22, 17661045), (30, 12951433), (33, 11774030), (34, 11427735), (51, 7618490), (55, 7064418), (66, 5887015), (85, 4571094), (102, 3809245), (110, 3532209), (165, 2354806), (170, 2285547), (187, 2077770), (255, 1523698), (330, 1177403), (374, 1038885), (510, 761849), (561, 692590), (935, 415554), (1122, 346295), (1870, 207777), (2805, 138518), (5610, 69259)]

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