80040004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{25621}}^1$

素因数の和:25707

約数の個数: 24

約数和(自身を含む): 154961856

約数和(自身を除く): 74921852

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 25621, 51242, 102484, 281831, 563662, 1127324, 1819091, 3638182, 7276364, 20010001, 40020002, 80040004]

約数ペア:

[(1, 80040004), (2, 40020002), (4, 20010001), (11, 7276364), (22, 3638182), (44, 1819091), (71, 1127324), (142, 563662), (284, 281831), (781, 102484), (1562, 51242), (3124, 25621)]