21830810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1291}}^1$

素因数の和:1406

約数の個数: 32

約数和(自身を含む): 41860800

約数和(自身を除く): 20029990

約数列:

[1, 2, 5, 10, 19, 38, 89, 95, 178, 190, 445, 890, 1291, 1691, 2582, 3382, 6455, 8455, 12910, 16910, 24529, 49058, 114899, 122645, 229798, 245290, 574495, 1148990, 2183081, 4366162, 10915405, 21830810]

約数ペア:

[(1, 21830810), (2, 10915405), (5, 4366162), (10, 2183081), (19, 1148990), (38, 574495), (89, 245290), (95, 229798), (178, 122645), (190, 114899), (445, 49058), (890, 24529), (1291, 16910), (1691, 12910), (2582, 8455), (3382, 6455)]