About the Number

121109890

121109889 ← → 121109891

2進数表記:111001101111111110110000010

漢数字表記:一億二千百十万九千八百九十

素因数分解:

2 1 × 5 1 × 11 1 × 59 1 × 18661 1

素因数の和:18738
約数の個数: 32
約数和(自身を含む): 241859520
約数和(自身を除く): 120749630

約数列:
[1, 2, 5, 10, 11, 22, 55, 59, 110, 118, 295, 590, 649, 1298, 3245, 6490, 18661, 37322, 93305, 186610, 205271, 410542, 1026355, 1100999, 2052710, 2201998, 5504995, 11009990, 12110989, 24221978, 60554945, 121109890]

約数ペア:
[(1, 121109890), (2, 60554945), (5, 24221978), (10, 12110989), (11, 11009990), (22, 5504995), (55, 2201998), (59, 2052710), (110, 1100999), (118, 1026355), (295, 410542), (590, 205271), (649, 186610), (1298, 93305), (3245, 37322), (6490, 18661)]

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