81997656

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{977}}^1$

素因数の和:1268

約数の個数: 64

約数和(自身を含む): 221810400

約数和(自身を除く): 139812744

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 269, 312, 538, 807, 977, 1076, 1614, 1954, 2152, 2931, 3228, 3497, 3908, 5862, 6456, 6994, 7816, 10491, 11724, 12701, 13988, 20982, 23448, 25402, 27976, 38103, 41964, 50804, 76206, 83928, 101608, 152412, 262813, 304824, 525626, 788439, 1051252, 1576878, 2102504, 3153756, 3416569, 6307512, 6833138, 10249707, 13666276, 20499414, 27332552, 40998828, 81997656]

約数ペア:

[(1, 81997656), (2, 40998828), (3, 27332552), (4, 20499414), (6, 13666276), (8, 10249707), (12, 6833138), (13, 6307512), (24, 3416569), (26, 3153756), (39, 2102504), (52, 1576878), (78, 1051252), (104, 788439), (156, 525626), (269, 304824), (312, 262813), (538, 152412), (807, 101608), (977, 83928), (1076, 76206), (1614, 50804), (1954, 41964), (2152, 38103), (2931, 27976), (3228, 25402), (3497, 23448), (3908, 20982), (5862, 13988), (6456, 12701), (6994, 11724), (7816, 10491)]