About the Number

128387640

128387639 ← → 128387641

2進数表記:111101001110000101000111000

漢数字表記:一億二千八百三十八万七千六百四十

素因数分解:

2 3 × 3 1 × 5 1 × 29 1 × 79 1 × 467 1

素因数の和:589
約数の個数: 128
約数和(自身を含む): 404352000
約数和(自身を除く): 275964360

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 79, 87, 116, 120, 145, 158, 174, 232, 237, 290, 316, 348, 395, 435, 467, 474, 580, 632, 696, 790, 870, 934, 948, 1160, 1185, 1401, 1580, 1740, 1868, 1896, 2291, 2335, 2370, 2802, 3160, 3480, 3736, 4582, 4670, 4740, 5604, 6873, 7005, 9164, 9340, 9480, 11208, 11455, 13543, 13746, 14010, 18328, 18680, 22910, 27086, 27492, 28020, 34365, 36893, 40629, 45820, 54172, 54984, 56040, 67715, 68730, 73786, 81258, 91640, 108344, 110679, 135430, 137460, 147572, 162516, 184465, 203145, 221358, 270860, 274920, 295144, 325032, 368930, 406290, 442716, 541720, 553395, 737860, 812580, 885432, 1069897, 1106790, 1475720, 1625160, 2139794, 2213580, 3209691, 4279588, 4427160, 5349485, 6419382, 8559176, 10698970, 12838764, 16048455, 21397940, 25677528, 32096910, 42795880, 64193820, 128387640]

約数ペア:
[(1, 128387640), (2, 64193820), (3, 42795880), (4, 32096910), (5, 25677528), (6, 21397940), (8, 16048455), (10, 12838764), (12, 10698970), (15, 8559176), (20, 6419382), (24, 5349485), (29, 4427160), (30, 4279588), (40, 3209691), (58, 2213580), (60, 2139794), (79, 1625160), (87, 1475720), (116, 1106790), (120, 1069897), (145, 885432), (158, 812580), (174, 737860), (232, 553395), (237, 541720), (290, 442716), (316, 406290), (348, 368930), (395, 325032), (435, 295144), (467, 274920), (474, 270860), (580, 221358), (632, 203145), (696, 184465), (790, 162516), (870, 147572), (934, 137460), (948, 135430), (1160, 110679), (1185, 108344), (1401, 91640), (1580, 81258), (1740, 73786), (1868, 68730), (1896, 67715), (2291, 56040), (2335, 54984), (2370, 54172), (2802, 45820), (3160, 40629), (3480, 36893), (3736, 34365), (4582, 28020), (4670, 27492), (4740, 27086), (5604, 22910), (6873, 18680), (7005, 18328), (9164, 14010), (9340, 13746), (9480, 13543), (11208, 11455)]

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