About the Number

128890880

128890879 ← → 128890881

2進数表記:111101011101011100000000000

漢数字表記:一億二千八百八十九万八百八十

素因数分解:

2 11 × 5 1 × 41 1 × 307 1

素因数の和:375
約数の個数: 96
約数和(自身を含む): 317837520
約数和(自身を除く): 188946640

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 307, 320, 328, 410, 512, 614, 640, 656, 820, 1024, 1228, 1280, 1312, 1535, 1640, 2048, 2456, 2560, 2624, 3070, 3280, 4912, 5120, 5248, 6140, 6560, 9824, 10240, 10496, 12280, 12587, 13120, 19648, 20992, 24560, 25174, 26240, 39296, 41984, 49120, 50348, 52480, 62935, 78592, 83968, 98240, 100696, 104960, 125870, 157184, 196480, 201392, 209920, 251740, 314368, 392960, 402784, 419840, 503480, 628736, 785920, 805568, 1006960, 1571840, 1611136, 2013920, 3143680, 3222272, 4027840, 6444544, 8055680, 12889088, 16111360, 25778176, 32222720, 64445440, 128890880]

約数ペア:
[(1, 128890880), (2, 64445440), (4, 32222720), (5, 25778176), (8, 16111360), (10, 12889088), (16, 8055680), (20, 6444544), (32, 4027840), (40, 3222272), (41, 3143680), (64, 2013920), (80, 1611136), (82, 1571840), (128, 1006960), (160, 805568), (164, 785920), (205, 628736), (256, 503480), (307, 419840), (320, 402784), (328, 392960), (410, 314368), (512, 251740), (614, 209920), (640, 201392), (656, 196480), (820, 157184), (1024, 125870), (1228, 104960), (1280, 100696), (1312, 98240), (1535, 83968), (1640, 78592), (2048, 62935), (2456, 52480), (2560, 50348), (2624, 49120), (3070, 41984), (3280, 39296), (4912, 26240), (5120, 25174), (5248, 24560), (6140, 20992), (6560, 19648), (9824, 13120), (10240, 12587), (10496, 12280)]

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