About the Number

21011010988

21011010987 ← → 21011010989

2進数表記:10011100100010110101001010110101100

漢数字表記:二百十億千百一万九百八十八

素因数分解:

2 2 × 11 1 × 31 1 × 2111 1 × 7297 1

素因数の和:9454
約数の個数: 48
約数和(自身を含む): 41431154688
約数和(自身を除く): 20420143700

約数列:
[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 2111, 4222, 7297, 8444, 14594, 23221, 29188, 46442, 65441, 80267, 92884, 130882, 160534, 226207, 261764, 321068, 452414, 719851, 904828, 1439702, 2488277, 2879404, 4976554, 9953108, 15403967, 30807934, 61615868, 169443637, 338887274, 477522977, 677774548, 955045954, 1910091908, 5252752747, 10505505494, 21011010988]

約数ペア:
[(1, 21011010988), (2, 10505505494), (4, 5252752747), (11, 1910091908), (22, 955045954), (31, 677774548), (44, 477522977), (62, 338887274), (124, 169443637), (341, 61615868), (682, 30807934), (1364, 15403967), (2111, 9953108), (4222, 4976554), (7297, 2879404), (8444, 2488277), (14594, 1439702), (23221, 904828), (29188, 719851), (46442, 452414), (65441, 321068), (80267, 261764), (92884, 226207), (130882, 160534)]

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