220020880

素因数分解:

$2^4\times 5^1\times {\mathrm{2750261}}^1$

素因数の和:2750274

約数の個数: 20

約数和(自身を含む): 511548732

約数和(自身を除く): 291527852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2750261, 5500522, 11001044, 13751305, 22002088, 27502610, 44004176, 55005220, 110010440, 220020880]

約数ペア:

[(1, 220020880), (2, 110010440), (4, 55005220), (5, 44004176), (8, 27502610), (10, 22002088), (16, 13751305), (20, 11001044), (40, 5500522), (80, 2750261)]