About the Number

28873988

28873987 ← → 28873989

2進数表記:1101110001001010100000100

漢数字表記:二千八百八十七万三千九百八十八

素因数分解:

2 2 × 11 2 × 13 2 × 353 1

素因数の和:405
約数の個数: 54
約数和(自身を含む): 60312042
約数和(自身を除く): 31438054

約数列:
[1, 2, 4, 11, 13, 22, 26, 44, 52, 121, 143, 169, 242, 286, 338, 353, 484, 572, 676, 706, 1412, 1573, 1859, 3146, 3718, 3883, 4589, 6292, 7436, 7766, 9178, 15532, 18356, 20449, 40898, 42713, 50479, 59657, 81796, 85426, 100958, 119314, 170852, 201916, 238628, 555269, 656227, 1110538, 1312454, 2221076, 2624908, 7218497, 14436994, 28873988]

約数ペア:
[(1, 28873988), (2, 14436994), (4, 7218497), (11, 2624908), (13, 2221076), (22, 1312454), (26, 1110538), (44, 656227), (52, 555269), (121, 238628), (143, 201916), (169, 170852), (242, 119314), (286, 100958), (338, 85426), (353, 81796), (484, 59657), (572, 50479), (676, 42713), (706, 40898), (1412, 20449), (1573, 18356), (1859, 15532), (3146, 9178), (3718, 7766), (3883, 7436), (4589, 6292)]

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