91231220

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{661}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 196629888

約数和(自身を除く): 105398668

約数列:

[1, 2, 4, 5, 10, 20, 67, 103, 134, 206, 268, 335, 412, 515, 661, 670, 1030, 1322, 1340, 2060, 2644, 3305, 6610, 6901, 13220, 13802, 27604, 34505, 44287, 68083, 69010, 88574, 136166, 138020, 177148, 221435, 272332, 340415, 442870, 680830, 885740, 1361660, 4561561, 9123122, 18246244, 22807805, 45615610, 91231220]

約数ペア:

[(1, 91231220), (2, 45615610), (4, 22807805), (5, 18246244), (10, 9123122), (20, 4561561), (67, 1361660), (103, 885740), (134, 680830), (206, 442870), (268, 340415), (335, 272332), (412, 221435), (515, 177148), (661, 138020), (670, 136166), (1030, 88574), (1322, 69010), (1340, 68083), (2060, 44287), (2644, 34505), (3305, 27604), (6610, 13802), (6901, 13220)]