164020880

素因数分解:

$2^4\times 5^1\times {\mathrm{2050261}}^1$

素因数の和:2050274

約数の個数: 20

約数和(自身を含む): 381348732

約数和(自身を除く): 217327852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2050261, 4100522, 8201044, 10251305, 16402088, 20502610, 32804176, 41005220, 82010440, 164020880]

約数ペア:

[(1, 164020880), (2, 82010440), (4, 41005220), (5, 32804176), (8, 20502610), (10, 16402088), (16, 10251305), (20, 8201044), (40, 4100522), (80, 2050261)]