21387888

素因数分解:

$2^4\times 3^5\times {\mathrm{5501}}^1$

素因数の和:5524

約数の個数: 60

約数和(自身を含む): 62084568

約数和(自身を除く): 40696680

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 243, 324, 432, 486, 648, 972, 1296, 1944, 3888, 5501, 11002, 16503, 22004, 33006, 44008, 49509, 66012, 88016, 99018, 132024, 148527, 198036, 264048, 297054, 396072, 445581, 594108, 792144, 891162, 1188216, 1336743, 1782324, 2376432, 2673486, 3564648, 5346972, 7129296, 10693944, 21387888]

約数ペア:

[(1, 21387888), (2, 10693944), (3, 7129296), (4, 5346972), (6, 3564648), (8, 2673486), (9, 2376432), (12, 1782324), (16, 1336743), (18, 1188216), (24, 891162), (27, 792144), (36, 594108), (48, 445581), (54, 396072), (72, 297054), (81, 264048), (108, 198036), (144, 148527), (162, 132024), (216, 99018), (243, 88016), (324, 66012), (432, 49509), (486, 44008), (648, 33006), (972, 22004), (1296, 16503), (1944, 11002), (3888, 5501)]