About the Number

128690640

128690639 ← → 128690641

2進数表記:111101010111010100111010000

漢数字表記:一億二千八百六十九万六百四十

素因数分解:

2 4 × 3 3 × 5 1 × 13 1 × 4583 1

素因数の和:4618
約数の個数: 160
約数和(自身を含む): 477469440
約数和(自身を除く): 348778800

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 90, 104, 108, 117, 120, 130, 135, 144, 156, 180, 195, 208, 216, 234, 240, 260, 270, 312, 351, 360, 390, 432, 468, 520, 540, 585, 624, 702, 720, 780, 936, 1040, 1080, 1170, 1404, 1560, 1755, 1872, 2160, 2340, 2808, 3120, 3510, 4583, 4680, 5616, 7020, 9166, 9360, 13749, 14040, 18332, 22915, 27498, 28080, 36664, 41247, 45830, 54996, 59579, 68745, 73328, 82494, 91660, 109992, 119158, 123741, 137490, 164988, 178737, 183320, 206235, 219984, 238316, 247482, 274980, 297895, 329976, 357474, 366640, 412470, 476632, 494964, 536211, 549960, 595790, 618705, 659952, 714948, 824940, 893685, 953264, 989928, 1072422, 1099920, 1191580, 1237410, 1429896, 1608633, 1649880, 1787370, 1979856, 2144844, 2383160, 2474820, 2681055, 2859792, 3217266, 3299760, 3574740, 4289688, 4766320, 4949640, 5362110, 6434532, 7149480, 8043165, 8579376, 9899280, 10724220, 12869064, 14298960, 16086330, 21448440, 25738128, 32172660, 42896880, 64345320, 128690640]

約数ペア:
[(1, 128690640), (2, 64345320), (3, 42896880), (4, 32172660), (5, 25738128), (6, 21448440), (8, 16086330), (9, 14298960), (10, 12869064), (12, 10724220), (13, 9899280), (15, 8579376), (16, 8043165), (18, 7149480), (20, 6434532), (24, 5362110), (26, 4949640), (27, 4766320), (30, 4289688), (36, 3574740), (39, 3299760), (40, 3217266), (45, 2859792), (48, 2681055), (52, 2474820), (54, 2383160), (60, 2144844), (65, 1979856), (72, 1787370), (78, 1649880), (80, 1608633), (90, 1429896), (104, 1237410), (108, 1191580), (117, 1099920), (120, 1072422), (130, 989928), (135, 953264), (144, 893685), (156, 824940), (180, 714948), (195, 659952), (208, 618705), (216, 595790), (234, 549960), (240, 536211), (260, 494964), (270, 476632), (312, 412470), (351, 366640), (360, 357474), (390, 329976), (432, 297895), (468, 274980), (520, 247482), (540, 238316), (585, 219984), (624, 206235), (702, 183320), (720, 178737), (780, 164988), (936, 137490), (1040, 123741), (1080, 119158), (1170, 109992), (1404, 91660), (1560, 82494), (1755, 73328), (1872, 68745), (2160, 59579), (2340, 54996), (2808, 45830), (3120, 41247), (3510, 36664), (4583, 28080), (4680, 27498), (5616, 22915), (7020, 18332), (9166, 14040), (9360, 13749)]

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