21617240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23497}}^1$

素因数の和:23531

約数の個数: 32

約数和(自身を含む): 50755680

約数和(自身を除く): 29138440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23497, 46994, 93988, 117485, 187976, 234970, 469940, 540431, 939880, 1080862, 2161724, 2702155, 4323448, 5404310, 10808620, 21617240]

約数ペア:

[(1, 21617240), (2, 10808620), (4, 5404310), (5, 4323448), (8, 2702155), (10, 2161724), (20, 1080862), (23, 939880), (40, 540431), (46, 469940), (92, 234970), (115, 187976), (184, 117485), (230, 93988), (460, 46994), (920, 23497)]