21093560

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1511}}^1$

素因数の和:1871

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 26534440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1511, 1745, 2792, 3022, 3490, 6044, 6980, 7555, 12088, 13960, 15110, 30220, 60440, 527339, 1054678, 2109356, 2636695, 4218712, 5273390, 10546780, 21093560]

約数ペア:

[(1, 21093560), (2, 10546780), (4, 5273390), (5, 4218712), (8, 2636695), (10, 2109356), (20, 1054678), (40, 527339), (349, 60440), (698, 30220), (1396, 15110), (1511, 13960), (1745, 12088), (2792, 7555), (3022, 6980), (3490, 6044)]