About the Number

81344790

81344789 ← → 81344791

2進数表記:100110110010011100100010110

漢数字表記:八千百三十四万四千七百九十

素因数分解:

2 1 × 3 3 × 5 1 × 23 1 × 13099 1

素因数の和:13138
約数の個数: 64
約数和(自身を含む): 226368000
約数和(自身を除く): 145023210

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 90, 115, 135, 138, 207, 230, 270, 345, 414, 621, 690, 1035, 1242, 2070, 3105, 6210, 13099, 26198, 39297, 65495, 78594, 117891, 130990, 196485, 235782, 301277, 353673, 392970, 589455, 602554, 707346, 903831, 1178910, 1506385, 1768365, 1807662, 2711493, 3012770, 3536730, 4519155, 5422986, 8134479, 9038310, 13557465, 16268958, 27114930, 40672395, 81344790]

約数ペア:
[(1, 81344790), (2, 40672395), (3, 27114930), (5, 16268958), (6, 13557465), (9, 9038310), (10, 8134479), (15, 5422986), (18, 4519155), (23, 3536730), (27, 3012770), (30, 2711493), (45, 1807662), (46, 1768365), (54, 1506385), (69, 1178910), (90, 903831), (115, 707346), (135, 602554), (138, 589455), (207, 392970), (230, 353673), (270, 301277), (345, 235782), (414, 196485), (621, 130990), (690, 117891), (1035, 78594), (1242, 65495), (2070, 39297), (3105, 26198), (6210, 13099)]

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